The Chevrolet Volt was not the only PHEV concept at the Detroit Auto Show. Ford Motor Company debuted a hydrogen-fueled, battery-powered plug-in in the new Airstream concept vehicle. Hardly a credible showing in my opinion.
In their press release they describe the car as follows:
The system, called HySeries Drive™, is powered by a 336-volt lithium-ion battery pack at all times and has a range of 25 miles on a full electric power. Once the battery pack is depleted by about 40 percent, the hydrogen-powered fuel cell begins generating electricity to recharge the batteries, increasing range another 280 miles, for a total driving range of more than 300 miles.
At home, the battery pack can be refreshed by plugging into a standard outlet. The HySeries Drive powertrain delivers a combined city/highway gasoline equivalent fuel economy rating of 41 miles per gallon and can travel up to 85 miles an hour. ...
The innovative powertrain reduces the size, weight, cost and complexity of a conventional fuel cell system by more than 50 percent. It also promises to more than double the lifetime of the fuel-cell stack.
The HySeries Drive system already is on the road in a Ford Edge prototype, which will be shown publicly for the first time at the Washington, D.C., Auto Show in January.