If you were to try and pinpoint BMW's evolution into "the ultimate driving machine", the 3.0 CSL would be a good place to start. A lightweight, homologation version of the E9 3.0 CSL was based on the 2000 four-cylinder coupe enlarged to fit BMW's M30 inline-six motor. The result was a racing success that took European touring car racing by storm. This 1972 3.0 CSL was delivered new to Italy in 1972 before coming to the US that same decade. A restoration in the '90s resulted in a repaint in black and a 3.5-liter M30 engine and dual Weber carbs, with the "Batmobile" aero package and Getrag five-speed manual added in the mid-2010s. Expect a prince around $150,000 for this important BMW when bidding ends.