Originally Posted by volante

You really have no idea of the efficiency of PV panels and the energy involved in moving a car around do you? If houses in southern California only just have enough room on their roofs to house enough PV panels to provide electricity for the house, where the hell are you going to put all the additional panels you'd need for places with less than 300 sunny days per year or at more northerly latitudes? What if you live in an apartment?