"> Consider hybrid cars; they generally get better fuel economy. 

I'm not an engineer, so I'm treading hazardous waters here, but I'm not so 
sure I agree."

A clue comes from the fact that EV's get their best consumption around town,
and ice cars on the open road. As ice can get 35% efficiency, but this is at
80% load, it drops terribly at low loads, and of course at zero load the is
no comparison. In an manual gas car, drive down a level road at 20 mph,
reach a steady state, then, holding the accelerator position, put your foot
on the clutch. The engine speed will increase a bit but not scream. This is
because most of the fuel is being spent on turning the engine over at that
speed, not on driving the car. Under the same conditions a hybrid will run
on electric.


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