1) Honest question: why hasn't the Dodge Viper received more love?
2) And while speaking of Dodge, what about the Stealth/Mitsubishi 3000. I remember when that thing was first released, it seemed like it offered an awful lot at a reasonable price point--and for the time, it was pretty cool looking.
3) Re that Mercedes 300 concept car, it kind of reminds me of the Plymouth Prowler, Chevy SSR, and the Ford Thunderbird of the early aughts, in the sense of trying to evoke a particular throwback that could find enough people who like the idea in the design room to get it to production, only to find out that the market for it is pretty limited. (Also, I love the 1955 version, but this one doesn't do much for me.)
Having said that, the throwback styling of the Mustang, Camaro, and the Challenger have done very well (and deservedly so). Oh, and I'm pretty sure the Germans would be a little offended to have anything of theirs compared to Plymouth, Chevy, and Ford.