What kind of savings are we talking about when plugging these machines into your electrical outlet in your house. Prices near have gone up over the last few years, I think last time I calculated it was approximately .22-.28 cents/kwh, now this was around 2-3 years ago, I have yet to get the average kwh as of recent but will when the next bill rolls in. Now take millions of people buying up these electric cars and place them in major cities like ny, chicago, california. Electric cars could destabilize the distribution power in years to come as more electric cars enter the road. Cost of electricity will go up which will just cost the same price as filling your car with $3.50 regular gas.