On Tue, 26 Jun 2012 03:22:55 +0000 (UTC), (Edward A.
Falk) wrote:

It depends on where the electricity comes from.

No, it does not.

There are essentially two sources of electric power on the planet:
Hydroelectric and coal. There are others, but they are very small.

Hydro power is cheap, so is always sold first. In other words, the
production capacity is always maxed out. It is not possible to produce
more hydro power than we already are.

Every electric car increases the total global demand for power, and
the only way to satisfy the demand is to make more coal power. Every
electric car is therefore coal powered.
--
RoRo