As the LP640 designation indicates, the 2007 Lamborghini Murcielago gets more firepower under its rear deck. Mounted amidships, the 6.5-liter V12 gets a bump from 580 horsepower at 7,500 rpm to 640 at eight grand as well as a little extra torque – 487 lb.-ft. at 6,000 revs from 480 at 5,400 rpm. Acceleration and top speed are both higher with the LP640: 3.4 seconds to 60 mph and a top speed of 211 mph.