A not-entirely-dissimilar story; I worked for a small company where there was an HR manager and two assistants. During the downturn in 2000, they had to lay off a number of employees, so the manager directed one of the assistants to prepare and assemble kits for each of the earmarked employees giving them information on the benefits and resources available to them. At the meeting where the layoffs were announced, the assistant handed out these packets to the employees, and was then handed her own by the manager. (Ouch.)

Several years later, when things weren't looking terribly rosy, the HR manager quit; there were rumors that there might be another round of layoffs to come, and she didn't want to go through the painful process of doing them again. (Despite the rough delivery above, she was genuinely a nice person; just forced to be less compassionate by corporate need. Case in point; I burned my finger on a soldering iron while at work, and stopped by her office to ask if we had any ice available. I could see on her face that her first reaction was genuine concern and sympathy, followed very shortly afterwards by an "oh dear, there's going to be some paperwork associated with this" look.)

Luckily, we mostly avoided the feared second round of layoffs - 7 people were let go, which was probably more just thinning the herd than layoffs due to purely financial concerns. Thankfully, I had left by the time that the office was shut down several years later. I think everybody knew it was a sinking ship, but nobody was motivated enough to find a different job until they had the engineers packing boxes and disassembling office furniture.

End goal: change the constitution. We need a start. It's easy to see how hard this will be and to give up early, but some of us feel the imperative to fight for it. We can change things. The vast will of the masses (corporation political donations are not equivalent to the free speech we enjoy as individuals) needs to be strategically gathered. Critical mass could take decades, as with things like gay marriage.

...Ford is offering a rebate on a new Fiesta (with power locks and windows!) for anybody willing to trade in their Tesla Model S.

Spammers or hackers could get your IP turned off. But I'd do it anyway to be helpful.

Thanks. I understand and appreciate where you are coming from.

As a founder of the EFF, I do stand up for the small consumers vs. the wealthy and powerful. There is no perfect solution.

When you make the rules, you are right when you're wrong.

I'm going to go ahead and assume that you didn't buy a "really fat kid" for yourself, and 'splain some things that I've learned as a nerdy Prius owner...

First, it's not gutless as you might think. It's not going to win any awards for acceleration, but it can do 0-60 in 9.7 seconds. That's probably on the slower half of the scale, but still faster than a Yaris Hatchback or Matrix, as well as non-US models like the Avensis, Aygo, or Auris - and that's looking only at Toyota sedans. Most of the gutlessness comes from us schmucks inside the car, who are in no hurry to rush you to the next red light when we can get there at the same time as you, and with half as much fuel, by taking it easy. Some of the gutlessness comes from a software setting that adjusts the throttle response to the gas pedal's position; in Eco mode, you really have to mash the pedal if you want to move, while PWR mode makes it more like most American cars where it's jumpy if you so much as look at the gas pedal. In between is "Normal" mode. There are plenty of Prius owners who hate the car in anything but PWR mode because they like to accelerate fast.

Second, it is a HUGE car on the inside relative to most of my friends' sedans. A good amount of the space is vertical, so it helps if whatever you're carrying is tall or can be stacked. But I've carried 3'x8' sheets of plywood, an 8-foot ladder, or 4 people and backpacking gear for a 4-day wilderness trip. Many people can carry several bicycles inside the car without taking them apart - my wife and I are both very tall, so we have to take off the front wheel of our bikes to fit our bikes in. Out of all my friends, none have cars that can carry any of those things - except one bicycle with the wheels removed, and the handlebars sticking out the window.

Third, I'd say it doesn't really have two power trains; it has one power train of which the gasoline engine and two motor-generators are an integral part. The car would be incapable of driving if any of them are removed, although it'd be easier to remove the gasoline engine if anything. The Prius doesn't have a normal transmission; there are two planetary gearsets that connect the MGs and engine to the wheels. By adjusting the speed and direction of the MGs, pretty much any gear ratio can be obtained. It's sometimes called an "eCVT" because of this, but it could just as easily be called a single-speed transmission. Get rid of the electronic parts of the powertrain, and you'd have to put in a transmission instead to replace it. Also, you'd lose the regeneration abilities of being a hybrid. Of course, if you remove the engine, you'd have to use a much larger battery instead - and even then, the Prius motors are not designed for high-speed use (over 45 mph, the engine has to be spinning to keep the motors from over-revving; I think the limit is about 60 mph in the plug-in variant of the Prius). So both halves of the powertrain are really required for it to work, much less for it to work as efficiently as it does.

That's not to say it's a car for everybody - and indeed, if your choices come down to a Tesla anything or a Prius, I'd go with the Tesla any day unless you plan on regularly exceeding its range in areas where high-speed charging is not available. But it's a good choice of cars for many people.

That said, I'm not surprised that hybrid sales occasionally have a down year - but the trend still seems to be pretty positive. Even though they mention share dropping from 2009 to 2010, the hybrid share is still up about 15% since 2009, at about 3.2% of all cars. Meanwhile, EVs are starting to take off, and often catch the attention of the same eco-minded type that was purchasing the early hybrid models years ago. Still, they only amount to about 0.6% of all vehicle sales. But I don't think hybrids are a long-term solution, just like gas cars aren't either. Unless we start synthesizing gasoline from something other than oil, we'll need to find an alternative fuel sooner or later - whether that means EVs or something else, only time will tell.

All I can say is that I hope Tesla gets other auto makers fired up, otherwise I may have to find a big pile of cash next time I want to buy a car...

You're misunderstanding. (And I didn't really try to explain it thoroughly, so here you go:)

There are several displays. The speedometer always shows the actual speed. There is another display to the right of the speedometer that shows various settings relating to the radar cruise control - the set following distance, whether the system detects a car in front of you, the set speed, and (if the Lane Keep Assist feature is turned on) whether the car has detected the lane edges or not.

When turning on the cruise control, the set speed shown on the right display is equal to the current speed. When you use the Accel or Coast buttons, it adjusts the set speed shown on the right display, independently of whatever speed you are actually going. Because of this, you can adjust your set speed even when the system is going slower than the set speed due to traffic in front of you. Also because of this, you can adjust your set speed much faster than the car is capable of reacting to match.

There is something to be said for consistency - for example, the Prius fakes "engine drag" when you let up on the accelerator, by drawing power off of the electric generator and charging the battery. It is also programmed to have creep like an automatic car does, where it starts crawling forward when you let off the brake pedal. Both of these are done to make it feel like any other car; there's no inherent reason that it needs to do these. Woz's difficulties with the cruise control stem from the fact that they depart from the standard cruise control behavior. On the other hand, if they didn't, performing some actions (like adjusting your set speed) would be much more difficult, so I don't really fault them for it. Honestly, if you're paying $30k+ for a car with all the bells and whistles, you really ought to RTFM. It may be *mostly* like every other car you've ever driven, but it will also answer a lot of questions you'll probably have, and even a few you didn't know you had.

No, Woz said he had an entirely different problem - one that he later clarified was more akin to a "broken button on the radio" than the alleged unintended acceleration - the cruise control would start accelerating rapidly, but he could still tap the brakes and cruise control would turn off. Initially, he mentioned it as a "hey, this is something different, but maybe it's related and will help you track down the issue!", but later it became clear that this was not an issue.

In the end, it turned out to be an unexpected behavior-as-intended. Most people are used to cruise control where you hold the Accel button until you reach the speed you want; once there, you let go of Accel and it maintains the speed. However, with the radar cruise control on his (and my) Prius, the Accel button adjusts the set speed shown on the LCD on the dashboard independently of (and generally more rapidly than) the vehicle speed - first, by 1 mph at a time, and eventually by 5 mph at a time if you keep holding it. So if you start out at 55 mph, and hold Accel until you're going 70 mph, the set speed shown on the dash might be 110 mph by then. So yes, the car will continue accelerating - but his issue was from not understanding the intended behavior of the system, not from a bug. This is possibly an indicator that the behavior is unintuitive and should be modified, or possibly an indicator that car owners should just read their damn manuals, even if you're Woz.

I nominate this for "understatement of the year".
A 4.6 kW braking system would be good for a *bicycle*, which could then stop in about half a second at full braking. As I noted in the GP, the total energy of their vehicle at 160 mph is 4.6 kWh, so it would take an HOUR to stop it at a rate of 4.6 kW. Even if you had 8 discs, it would still take you 7.5 minutes to stop. You'd go well over 10 miles in that time.

And, as others have noted, kW is a unit of power anyway, and so is fairly meaningless for a braking system, which is taking huge amounts of kinetic energy and trying to convert them to something else (eg heat) without that something else causing some sort of spectacular show.

But maybe it's just the journalist's error - 4.6 *kWh* would be a reasonable number; eg the equivalent of slowing down a 1000 kg vehicle from 400 mph to 0. Or, in their example, the 160 mph bus must weigh about 6500 kg. Not coincidentally, Wikipedia lists the curb weight of the Bloodhound SSC as 6,422 kg.

(Of course, whether the road is wet or dry has nothing to do with the amount of energy dissipated in stopping the bus. They might as well have said "It's like stopping a bus from 160 mph on a Tuesday.")

Sir, you will be hearing from my attorney shortly on the basis that you have provided me with illegal advice. I will be seeking PUN-ative damages.

This is Slashdot. Since when is it a requirement to *read* any of previous postings, much less comprehend them or post something that makes any sense whatsoever given the context? ;-)

Oh well, at least I had the fun of figuring out the gasoline/battery ratio. I had previously calculated that my Prius's battery is basically the equivalent energy storage of two tablespoons of gasoline.

That's a bit of an exaggeration/misinterpretation. Yes, the battery can be heavy; on a car with a reasonably long range like the Tesla, about a quarter of the weight (1,000-1,300 pounds) is the battery. On the other hand, some of that weight gain is offset by removing things that aren't needed - like the gas tank, fuel pump and hoses, gasoline itself (about 120 pounds for a full 20-gallon tank), as well as other components that aren't needed on an EV. As another example, a V8 engine weighs around 600 pounds; the Tesla Model S motor apparently weighs about 150 pounds - or 300 pounds if you include the reduction gear and inverter.

Anyway, the reason why range is difficult is that the energy density of gasoline is far higher than that of a battery. An 85 kWh battery, at ~1,300 pounds, has an energy density of 0.24 MJ per pound. Gasoline, on the other hand, contains about 19.2 MJ per pound. Even at the abysmal efficiency of an internal combustion engine (on average, about 20%), they still need 16 times less weight in fuel than an EV does in batteries.

The car companies are solving for a complex set of variables - the volume of the car dedicated to batteries, the weight (and thus power-to-weight ratio), the cost, the range requirements of their target market, etc. Tesla is trying to make the EV people's primary car, by using a huge battery capable of brief ultra-high-power recharging; most other companies have chosen to simplify, by marketing the EV as a family's second car - good for going to work, school, and errands (and 99% of most peoples' driving); but they still have a second car for road trips.

Yeah, this seems true to me too. Not too long ago, I bought a house, which involved faxing a wire request to my bank (in a different state). To prove my identity, they called the number I put on the form, and asked me a series of 10 security questions; I didn't have to give a driver's license or other documentation of my identity.

Honestly, I was a little surprised by how much the bank knew about me.

Similarly, when I needed my birth certificate to get a wedding license, they would have accepted a number of other documents (which are easier to replace) in lieu of a driver's license - like a paycheck and a utility bill.

I would disagree conditionally; security through obscurity is bad if it is your only form of security, and it's bad against a determined, well-funded attacker, but it can still provide some amount of security. Requiring an attacker to acquire an 8-inch-floppy disk (and drive) might serve to deter $SCRIPT_KIDDIE from doing anything to your system, because frankly, it's a pain. It certainly won't do much to deter $FOREIGN_SPY; it'll be a nuisance and probably add time to their planning of an attack (which is still beneficial), but you obviously need other security measures that can prevent their access.

You might think of it like many of the forms of cryptography used online today - the whole point is to create a math problem that would be very difficult for a third party to solve backwards, where "very difficult" is defined in terms of the computation power a potential attacker might have and a period of time after which the encrypted information would no longer have value. This means that encrypted data isn't vulnerable to anybody living today; but some day, it will be. If your goal were to encrypt data for all time (or against somebody with unlimited resources), you would need a very different mechanism to "obscure" your data than today's typical encryption. Security through obscurity is obviously weaker, but it can help to prevent casual attacks. (Then again, so could all the other stuff you have to do to prevent the more determined attackers - so adding obscurity is not helpful, but having it naturally does carry some small value.)