CAR-NNOSSEUR, read ^THIS^ post. Choleric put it very clear and easy to understand.
Mercedes can build supercars (and have built many in the past).
THEY BUILD THEIR SUPERCARS ACCORDING TO THEIR PHILOSOPHY. NOT FERRARI, NOT PORSCHE, NOT LAMBORGHINI, NOT KIA, NOT HYUNDAI, NO, *THEIR* PHILOSOPHY.
I've said this before. The SLR, although a supercar, is really in a class of its own since it incorporates traditional Mercedes' values such as comfort (especially for long-distances), A/T gearbox etc. This is what Mercedes feels a supercar should be like. Just because it doesn't match the Ferrari or Porsche philosophy doesn't mean the SLR isn't a serious supercar, it is.
I have zero problems admitting that the Enzo, Carrera GT etc. will be the more involving, sporty etc. supercars than the SLR. Someone who wants an engaging drive won't even consider the SLR. The SLR has however conquered some of the folks who firstly look for something hardcore and comfortable at the same time: two ideals which the SLR fullfills.
Don't let this thread turn into a flame war, please. I respect your opinions, but sometimes, you're posting stuff which has no truth to it like your claim that "Mercedes cannot build a sports car / supercar". Anyone who knows a bit about Mercedes history will know that they can probably be attributed to also have "invented the sports car" as well in the late 19th century when they participated Paris to _____ races.