Or, they might be coming in goodly numbers by 2010, say, or by 2020. It remains a best-guess situation. In it, Tom Cruise drives a fuel-cell car. But they weren't as much fun. The other speakers discussed the current state of the art of fuel-cell vehicles as well as the technology's advantages and disadvantages.
Fuel cells convert a fuel into hydrogen, which then is mixed with oxygen to make electricity.
That electricity is used to power a car's electric motor. Water vapor is the only tail-pipe emission. It's kind of like the Holy Grail. It's the car we'll be driving into the next millennium. His group's concern is what fuel will power fuel cells.