A track machine

The BMW Z3 M-Coupe is a special vehicle. For starters, it is the most rigid BMW ever built - basically a Z3 with all the reinforcements in place, PLUS a rigid roof. It is also the only BMW that I know of without a numerical designation, along with the M Roadster. Finding a one these days is difficult. The M-Coupe was only produced between 1998 and 2002, and fewer than 6500 were sold in all of the model years combined.