This is part 2 of my series of posts about visiting GM Headquarters in Detroit for the ChallengeX program and to meet with some GM executives. I attended this event representing both GreenOptions.com and EcoGeek.org, and these articles are cross-posted to both sites. Previous story here.
Several of the vehicles were available to be driven at the ChallengeX event. Of the vehicles that were there, I was most interested in driving the University of Waterloo's entry. Most of the teams (12 of the 17 competitors) were using a B20 biodiesel blend as their fuel and all but one of the others used some form of internal combustion with E85 ethanol or reformulated gasoline. But the University of Waterloo team took a different approach.
The Waterloo vehicle was powered by a hydrogen fuel cell (with onboard batteries for backup) and propelled by front and rear electric motors. When I sat down behind the wheel, my guide from the Waterloo team explained that some of the things in the vehicle that are different from the way we're used to driving a car. There were a number of different sounds, coming from the front and the rear, as various systems came online to start the fuel cell system in operation. Matt Stevens from the Waterloo team explained the whole sequence of operation to me this way: