Will fuel cells zap the Energizer bunny?

By Ed Cohne

It wasn’t long ago that futurists were predicting the ascendancy of clean, quiet electric cars that would be plugged in at home to recharge. A new version of the future turns that scenario upside down: The house plugs into the car and draws whatever power it needs from the vehicle’s engine.

It’s not such a crazy idea. Most people don’t realize it, but making a car go takes much more energy than powering everything in the typical house. If cars ran on a more efficient, nonpolluting system such as fuel cells instead of by the combustion of gasoline, they could quietly and safely generate all the electricity a house needed from the garage. (Batteries would be needed to take over when the car was away.)…

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