"Doctor Drivel" gurgled happily, sounding much
like they were saying:

And the answer to how big that is, is well under half a tonne for
the smaller one.

...or about half the weight of the rest of the car...

Similar to the power train on an IC car.

Rubbish. Rover's K-series weighs about 130kg with transmission. Add
50kg for fuel, and you have a complete powertrain with a 300 mile range
(and five minutes recharge for the next 300 miles) for 40% of that
"half a ton".

The powertrain on a 2cv - engine and gearbox - is light enough to be
carried by two people. With 25 litres of fuel, it'll give a four-seater
car weighing half a ton _complete_ a range of 200+ miles.

..and still emits filth from the exhaust and still 75% of the energy in
the tank is wasted.

....and still you miss the point more than slightly...

Boy you are dumb!

I do wish you'd stop referring to yourself in the second person. It's
very... odd...