Deja:
I believe they really are over twice the cost, but their production is mandated by law and the manufacturers sell them at a loss. Also, I am not so sure the zero-emissions thing is realistic either. The electricity they run on comes from somewhere, and that somewhere probably produces emissions. With the inefficiencies of multi-stage energy transferal (i.e. burn hydro-carbons to produce electricity, transmit the power, store it in a battery, etc…) these things may in some cases actually produce more emissions than a car with an 80 hp four-banger.
Hooligan