The luxury car maker Mercedes will be unveiling new 2013 Mercedes-Benz SL65 AMG V12 Roadster at this year’s New York Auto Show. The AMG 6.0-liter V12 biturbo engine generates an output of 621 hp. The all-aluminum body-in-white and carbon body makes it lighter by over 254 pounds as compared to its predecessors, the SL550 roadster [...]