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Fifty years ago, General Motors called its high-tech concept cars "Dream Cars." Most of them, like a turbine-powered car that looked like a jet airplane, remained just that—a dream. Today's high-tech dream cars are rooted in much more practical concerns, especially fuel efficiency and weight savings, which were not on the pop-culture radar in the 1950s. Today's concept cars are much closer to making dreams like fuel cells, which generate electricity from hydrogen and emit only water vapor, come true.
By Jim Henry