Of course, every auto show has its own character. Tokyo is all about high-tech. Los Angeles focuses on being green and efficient. Frankfurt is overwhelmingly performance-oriented. Geneva espouses design. Detroit is all about muscle—power, energy, and a healthy dose of mischief. But times have changed; we want to see all of these qualities at the show. Popular Science will be providing blanket coverage from the Motor City, and we decided to whet your appetite with the five key stories (and their cars) we're chasing down this week.