A V-12 engine and a luxury ride and feel--what else could you ask for in a car? Mercedes Benz's response will be "nothing," especially when they present you with their 2015 S65 AMG, the latest and greatest full-size performance sedan.With it's luxurious interior and smooth exterior, it's hard to believe that there's a twin-turbocharged, 6.0-liter V-12 delivering 621 horses under the hood, meaning that you and your lucky passengers can get 60mph from a dead-stop in just 4.2 seconds. The engine will be controlled with AMG's SPEEDSHIFT PLUS 7G-TRONIC system, which replaces the 5-speed system of the 2014 while the 20-inch light alloy wheels harkens back to MB's early days back in the 1930's with the legendary 540K. Passengers will enjoy Nappa leather seats complete with a massage function that, when combined with the panoramic sliding sunroof, will put a stop to all those "are we there yet" complaints. Other features worth noting are the stainless steel pedals, a Burmester premium audio system with 24 speakers, a panoramic sliding sunroof and a surround view camera. Expect to learn more about the 2015 Mercedes-Benz S65 AMG when it arrives at the LA Auto Show later this month.