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Comment Re:Are there better uses for this technology? (Score 1) 105

As I recall compressing and storing hydrogen is a very expensive process. One problem is that hydrogen likes to destroy most metals. Any piping, compressor, or container must be made of expensive metals or lined with glass or something.

While this is true, the really expensive part is the high-pressure tank. It has to be fairly extreme to actually hold the hydrogen, let alone the issue of sealing it against the gas which is basically a solved problem. We already are using expensive alloys for common engines now that gasoline direct injection has become common. The big difference in practice now is that a gas tank is stamped out of sheet metal and costs basically nothing, and a hydrogen tank is made out of carbon fiber and titanium or aluminum and costs a bundle.

I might be mistaken but hydrocarbon liquids can store hydrogen in a much smaller space than any compressed gas.

It's true. The problem is, burning them produces undesirable emissions. When you burn hydrogen gas you get water vapor and heat out the other end; the emissions truly are cleaner than the intake air. When you burn gasoline you get soot and carbon monoxide. You can minimize the CO, you can reduce the soot, but you can't make them go away. When you burn diesel you get less of everything but NOx, but then you get NOx. So what do you burn? Probably the "best" thing would be methane. It has similar energy density problems to hydrogen, but it has dramatically lower pressure requirements and it doesn't require exotic alloys. Any gasoline engine can be converted to run on it fairly cheaply, at least in theory. (Doing it very cheaply requires automaker cooperation and a vehicle with a reprogrammable PCM, but you can do it "from scratch" without much cash outlay to carbureted vehicles as well — and basically turn them fuel-injected in the process, or you can just use a vacuum-controlled gas regulator which behaves like a carb. Both approaches are commonly used in propane conversions. Methane vs. propane means a very slightly different working pressure, and different injector timing or regulator adjustment.

Comment Re:But that would destroy the economy! (Score 1) 179

If people can store cash in their mattress, you can't jack up negative interest rates and force consumers to spend like they should! The flow of money to the 1% would decrease slightly! Won't anyone think of the 1%?

No, you just print more money, and hand it to the 1%. That keeps the money flowing that direction, and devalues the cash in mattresses.

Comment Re: Smart! (Score 1) 179

I can imagine many gov't entities that may choose to not accept 'cash', because accepting cash requires additional security that checks, CC, and money orders don't, requires you to keep sufficient change on-hand, make bank deposits, etc.

No, government agencies cannot refuse to accept cash for anything which is mandatory, and they can't refuse pennies either. On the other hand, if you think pissing off your local government with a shitstorm of pennies is a good idea, you've got another think coming. The definition of legal tender is that you can use it to settle a debt. If someone doesn't want your pennies, they have to tell you before you incur the debt that they won't accept them, same as how a gas station has to post a sign saying no 100s if they don't want those and they let you pump before paying.

Comment Re:Sounds good... (Score 1) 105

In my house, if the hot tub heater, electric dryer, and baseboard heaters are all on at once, that's 25 kW. And that only takes 100 amps of my 200 amp service. Electric car can take another 10 kW.
This project is for the military who will pay big bucks for underperforming, inefficient kit.
This is just the military-industrial complex sucking your tax dollars... business as usual.

Comment Re:'Reversable' (Score 2) 105

Or better yet just spill that forty of Old English 800 right on your keyboard

Eew. I'll have you know I drink quality microbrews, they match my neckbeard. Right now my favorite is Knee Deep, but I'm a hophead.

Don't worry without shitposting on Slashdot

Well sorry, I come from BBSes and USENET. My people invented shitposting.

Comment Re:So what should we do? (Score 1) 564

I like the P-R-N-D-4-3-2-L layout on the Toyota RAV4. Very functional and safe IMHO. Pretty hard to fuck that up.

If you like that, then you should love classic euro slush shifters, like what's in my '82 300SD... it's actually taken from another car in the same vein, probably a gasser. It has a wiggly little gate so that it's trivial to pull it back to one below overdrive, then you can push it back up into OD without looking. If you want to grab a lower gear you wiggle it to the right a little while pulling it. If you want the lowest gear, there's a gate switch which pushes over to the right from there. I don't think my trans implements that function, though. It's load and cable-controlled, though with an electric kickdown switch. It's easy to do a lot of shifting with it, I get it all the way down sometimes just for laughs in the canyons. Torque on tap...

Comment Re:So what should we do? (Score 1) 564

It's kinda like the emergency/parking brake in a car. Often you have to do two things at the same time to release it, e.g. hold a stiff button down and move a lever. You don't want it to be too easy to disengage.

That's going away, because manual parking brakes are going away. Eliminating the cable and its protecting sheath actually saves weight, even when you implement electrics which can apply the parking brake.

Comment Re:Uh... let me think about it (Score 1) 539

Maybe your navigation system does, but GPS knows absolutely nothing. Unless your maps are up to date it doesn't even know where the road leads, much less how the current conditions are.

Spend literally another $20-30 on a GPS and you can get one with traffic reception. The feature only really works in metro areas, and only once have I ever had a notification of an upcoming roadwork, but they at least know something when there is a major traffic insult ahead, and this data gives the detour function something to work with. If you buy last year's GPS refurb'd or just on clearance, but with lifetime traffic and maps, then you can get the feature actually cheaper than buying this year's GPS... and you get the same map data.

Comment Re:Uh... let me think about it (Score 1) 539

It's all anecdotal of course, but I can tell you that I always do at least 10 MPH under the limit (to offset police speed gun errors) so I can concentrate on the road,

Holy shit, you're an asshole. Speed the fuck up, you road obstruction.

and sometimes that causes idiots to try to overtake on a blind bend.

Why don't you try pulling over when you're holding people up, you self-entitled fuckbag?

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