[dcb]

note also in that link, the generator itself can receive 16hp from the engine, but puts out 6500 watts, that makes just the conversion of rotary motion to electrical power step 54% efficient and it hasn't even moved the car yet. I figure it is using 1.65 gph at peak hp. The engine could also drive a wheel at around 95% efficiency under the right conditions instead of making electricity. A smart driver can use that to great advantage.