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Comment Re: Glad to have it (Score 1) 451

Absolutely, we suck as drivers..... Somewhat of a "car guy" here. Anywhere on the web: When these threads pop up, you will usually get the self professed aficionados who insist that they can out-drive the ABS, or the electronic stability control, or whatever feature is being discussed...

The cold hard actuarial tested reality is that, as a whole, we cannot, and my sneaking suspicion is that the vast, vast majority of self-professed outlyers can't either.

My other pet-peeve are people who bash side-curtain airbags as "useless crap" that weighs down their car.
1) the systems don't weigh that much
2) go visit a closed-head injury rehab center and tell me side-curtain airbags are useless.

Comment Re:Hybrids make sense for trucks (Score 1) 904

By that logic hybrids in cars wouldn't make any sense either but they do. They are demonstrably more efficient at comparable horsepower even in the face of the conversion losses.

hybrid cars do well because the electric motor and regenerative brakes help them out greatly in city driving..

BUT, you are overgeneralizing: A hybrid setup, be it a series hybrid, or a parallel hybrid is NOT demonstrably more efficient in high endurance constant speed operation..

Energy transfer is not free. A generator that puts out X watts of electric energy has to have X + {some number} of watts of mechanical put into it by an internal combustion engine. And likewise an electric motor that has to supply Y number of watts to a wheel hub has to have itself Y + {some number} of watts of electric energy put into it. Mechanical transmissions are not lossless either, but modern ones do quite good, especially when they lock into their highest gear and the IC engine driving them stays at a constant RPM in the RPM range where they are most efficient. A internal combustion engine, chugging along at a constant 1800 RPM into a good modern tranny at high gear is going to do better than if it was running a generator that was charging a battery, that was hooked up to a wire, that ran to a motor, which turns a wheel. This is precisely why the first generation of chevy volts locked in to a purely mechanical mode at highway speeds, it doesn't make sense to hybridize in that use case.

Comment Re:Trucks will be hybrids, not pure EV (Score 1) 904

It makes great sense on trains, because you it allows you to get power to wheels on various points on the train, which is highly advantageous and impossibly difficult to accomplish mechanically.

When you scale down to car or truck size, mechanical transmissions work reasonably well, and are very efficient these days.
There is a significant loss, compared to a purely mechanical setup, that occurs when you turn mechanical energy into electrical energy in a generator, just to send it over the wire and convert it right back to mechanical energy at the wheel.

If the bulk of the electricity stored in the batteries comes from a cheap source (i.e. an outlet), it still makes sense, but if you are talking about a high endurance application where the vast majority of electricity is generated locally it doesn't.

Comment Re:Good idea (Score 1) 107

Somebody needs to tell a certain company that does third party security validation that. MD5 hashes have use in things that have nothing to do with security, and they constantly get flagged.
The solution is pretty easy, just use a different Hash, and Apache Commons makes that change a one-liner... but still.. cmoon...

Comment Re:Oh please. (Score 1) 76

Revelation 8:10-11English Standard Version (ESV) 10 The third angel blew his trumpet, and a great star fell from heaven, blazing like a torch, and it fell on a third of the rivers and on the springs of water. 11 The name of the star is Wormwood.[a] A third of the waters became wormwood, and many people died from the water, because it had been made bitter.

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