Meaning, only 20-30% of the energy that is created is actually used for the intended purpose, such as propelling a car.
The rest- heat and exhaust waste.
This seems like one of those things I knew and forgot. But it’s also one of those things that almost, just almost want to join the black helicopter crowd and rally against the big bad oil companies and automobile manufacturers.
Because seriously, we can do better than 30%. (I said almost.)

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I did know this. It’s sad, but trying to convert 1,000,000,000 cars to a different form… that’s an undertaking, to say the least…