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

My opinion is that the technology is JUST good enough to use for large
scale replacement of IC across the board in the next ten years.
Especially if attention is paid to the rest of the vehicle weight- and
aeodymamic-wise.

You got that right.

The aerodynamics barely come into play at town speeds. And why can't both
aerodynamic and weight efficiencies come into play for internal-
combustion vehicles as well? Simple. Because people WANT bigger cars and
they WANT cars which have high passive-safety scores. Both of which give
weight.