The next Mercedes-Benz SL, codenamed R231, is new from bottom to top. Loosely based on the rear-wheel drive components set of the E-class, the hardtop-coupe gets a longer wheelbase to facilitate entry and egress for a graying customer base. There's also more room for passengers and luggage. Inside, we find a more user-friendly cockpit with better ergonomics, extended memory functions and new seats developed and built together with BMW.