"Simon Hobson" wrote in message
et...
On Mon, 16 Jan 2006 19:27:30 +0000, The Natural Philosopher wrote
(in message ):

Lithium cells have a theoretical energy desnity of 350Wh per kg...and
already up to half that or more has been achieved.

So 3kg per kWh, or 300kg for a 100kWh battery. I think that's wiped out
any
weight saving from removing the engine & gearbox from most small cars.
That's
assuming development to the full potential, at present it's going to be a
600kg battery.

In your worst case scenario, a crock of a polluting space consuming engine
and gearbox is removed, creating a better designed car for aerodynamics, and
interior space, saving energy again. Also the simplicity and maintenance
free mechanicals, not to mention the smoothness and quietness.