To some extent, I agree with zhead240, but one has to evaluate both sides of the equation... 1) Power plants are typically are more efficient than the family car when it comes to converting hydrocarbons to usable energy. This is especially true, if as pointed out by Carl, you have nuclear powered plants. That's why electric cars can make the valid claim of operating at and equivilent cost of 100 mpg compared to gasoline powered vehicles. That's still twice as effficient as a Prius. 2) I don't have any data to back this up, but my guess is that the environmental impact of the additional batteries is probably no worse, (and probably less), than the emmisons caused by all those 100,000,000 vehicles inefficiently burning gas and diesel every day. I'm not tring to trivialize the battery recycling / disposal problem, but you need to also consider the positives, not just the negatives. 3) What I'd really like to see is more hydrogen fuel cell research. I was involved in a small, catalytic hydrogen generator company at one time and it looks like a promising approach. We actually had a fuel cell powered demo car. All that exits the tailpipe is water vapor. Of course, that requires energy, be it chemical or electric to release the hydrogen from water, or a safe means to store hydrogen. To make electric or hydrogen powered cars viable, you need the infastructure. I think that's really the biggest hurdle to overcome. Vehicle cost will come down to be comparable to fossil fuel powered vehicles as consumer demand, (and sales), increase. Till then, as long as it's just a novelty market, electric cars such as the Tesla or Karma will remain a rich men's toys. Just my 2 cents. The soap box is now open...