The Ultimate Expression of Your Sports Car Passion -- in a Four-Door? What if you could get your hands on a high-performance German driving machine that competes with Porsches and Mercedes, doesn+t cost a fortune, and even has a usable back seat and trunk? Meet the classic BMW 5-Series M car: - Possibly the fastest and tightest-handling sedan ever manufactured - Sold in the United States between 1988 and 2003 (three different models) - With a plain-looking...