No, it's not polite to stare. But you're forgiven in this case. The SL is a legendary roadster, and this gorgeous latest version won't tarnish that legend one whit. It's an aluminum sculpture wrapped around a V-8 engine that produces 382 h.p., replacing a heavier, less efficient V-12. An Airscarf heater in the head restraints lets you keep the top down even if the temperature drops. From $103,650