Ford launches plug-in hybrid with hydrogen fuel cell:  Jan 2007:  "Ford launched a hydrogen-fuelled, battery-powered plug-in powertrain concept in the new Airstream concept vehicle this week at the North American International Auto Show. The system, trademarked 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%, the hydrogen-powered fuel cell begins generating electricity to recharge the batteries, increasing range by another 280 miles, for a total driving range of more than 300 miles. ..The HySeries powertrain reduces the size, weight, cost and complexity of a conventional fuel cell system by more than 50%, and also promises to more than double the lifetime of the fuel-cell stack...

"You could take out the fuel cell and replace it with a hydrogen or diesel internal combustion engine," [the chief engineer] explained. "And instead of a six- or eight-cylinder engine, I could use a considerably smaller three- or two-cylinder engine as an auxiliary power unit to recharge the battery pack.""
  8:51:58 AM