There were around 1,400 examples of the BMW e46 M3 CSL built, and by all accounts they were exceptionally well received. However, according to Ludwig Willisch, the boss of the automaker's M division, the current e92 M3 won't get the same treatment. He - or perhaps the accountants - feel that "based on current numbers, there is most likely insufficient demand for the M3 CSL."

If a current scorching version of the e92 were to exist, it would have been bumped by anywhere from 36 to 56 horsepower, shed 200 pounds or more, worn some different tires and a set of bigger lungs. In light of the possible volume, though, which would be small, BMW - or again, its accountants - would rather focus on the X6 and X5 for now. Thanks for the tip, Mike!

Lighter means faster. If you have yet to grasp that concept, have a look at the Ferrari 430 Scuderia, Lamborghini Gallardo Superleggera or Porsche 911 GT3 RS - each capable of leaving the heavier versions of each lightning-quick sportscar on which they're based in the dust. The performance gap is widened not by more power, but by a higher power-to-weight ratio resulting from an aggressive kilo-trimming program. Another in their ranks: the gone-but-not-forgotten, previous-generation BMW M3 CSL.