The SEMA trade show glorifies the automotive aftermarket. In recent years, automakers haven’t been as involved in the show as they were during the industry’s high times. For 2009, some automakers have gone all out for SEMA again — like Subaru with its snow-ready rally STI (above). For more of the most extreme concepts from automakers, check out the gallery below. If you’re into trucks, check out PickupTrucks.com’s show coverage.