Rising in Motown's ruins: a generation of entrepreneurs who want to make new kinds of cars in new ways. They just might give Amereica another century in this vital industry. In the gloomy basement cafeteria of New York's Jacob Javits Center, Henrik Fisker is choking down a chicken sandwich and imagining a new kind of American car company. Almost everything is outsourced--engineering, components, the electric power train, manufacturing. No messy work rules to worry about, no postretirement health care. Only design and marketing remain in-house. ''It's a great time to launch a new car company like ours,'' he says, speaking...