Apparently on date Sat, 3 Apr 2004 11:39:07 +0100, Clive
said:

In message , Sales!
writes

There are hidden factors, an ICE engine produces heat that is used to
keep the passenger compartment warm while the engine is running. Try
keeping the car warm, dry or for that matter cool in summer, using your
battery power source instead of the combustion engine's mechanical or
heat energy and suddenly there's a whole extra load on the alternative
power source that is not at all easy to incorporate.
Showing just how inefficient a petrol engine is.

Show me where a battery powered vehicle is even more efficient than an ICE
engine, then, when adding in the factor of keeping the passenger compartment
warm.

Feel free to include steam power. Or sails. Solar energy is ok too, but be
ready to justify the "sun is nice and warm" argument with something including
going to work on a rainy day and in December when the windows are frozen. Steam
does work.