On an electric car, by the time you mine the copper etc, smelt the lead, transport said materials to China etc for further processing,
and manufacture of finished components ship the finished components to the factory that assembles the electric car you are way upside
down in your carbon footprint. The electric car may last 10 years, then you have to dispose of the used batteries. Over the gathering materials.
building and shipping, the Pruis leaves a much larger footprint than a full size hummer. The study and facts are out there, google is your friend,
this time. I do not approve of any current powered vehicles for mass transportation.