ALL WHEELS GO Squat two-seat roadsters will lure the post-Yahoo generation. This concept car from GM, above, is based on new plastics that will make tomorrow's cars completely recyclable. Will they have a steering wheel or fly-by-wire joysticks?
BIG AND TALL Rather than stretching its cars, GM is experimenting with higher rooflines and flat, ultracompact engines to give its entry-level sedans, like the one above, extra space to haul cargo and people. Larger, lighter wheels, below, help add stability
HYBRID'S HYBRID Chrysler led the design revolution in the 1990s with streamlined, low-slung road rockets that all but did away with the...