Mercedes-AMG S65 Cabriolet Packs Massive V12

The range-topping Mercedes-AMG S65 Cabriolet has been unveiled, boasting 630 horsepower and 738 pound-feet of torque from its massive V12.  Powered by a 6.0-liter biturbo V12 engine, this is the first time the German automaker has offered the powerplant in a droptop...