In article , Doctor Drivel
?@?.? scribeth thus

"tony sayer" wrote in message
...

I think that people don't have much appreciation just how much "energy"
there is in a gallon of petrol. And just how much energy it takes to
shove a motor car of any decent size around.....

A largish car doing 70mph only uses about 20-30% of the power of the engine.
The surplus power is for acceleration.

Yes indeed.. How much power?..

Electric drive and kinetic brake
recovery using supercaps and a decent battery set can mean engines are much
smaller.

More weight to lug around and accelerate ..

Range extenders means the engines can be built light, small and
optimised to run at its sweet revving spot. All win, win.

Range extenders, do they run on Unobtainium?..


The way it is now going.

Zoooooooooooooooooooooooom

In the Dr's world of course...


--
Tony Sayer