there are alot of cars that would out perform the cls 65 on a track, maybe not on the strip, but sports cars aren't drag cars, they are cars meant to perform on tracks. the fq is an amazing car, still wouldn't call it a sports car. the cool crap comes with 2 doors, boxter s, 911, 911 turbo, ferrari enzo, carrera gt, slr, those are cool sports cars. the m3 is still cooler than all the cars you listed, the clk55 is cooler than the c55, and the old 2 door sti's are way cooler than the new ones. fact is, two extra doors is just a compromise to sell more cars, and all great sports cars will always have two doors.