Lamborghini is never content to leave good enough alone, and just a couple years after the Murciélago was introduced an improved LP640 version hit the streets with more horsepower and a host of other improvements. Of course, the structure of the car is largely the same, a cocktail of composites, high-tensile steel, and aluminum—and so is the drivetrain, a V12 paired with Lamborghini’s excellent AWD system. The chassis is clothed in a mostly carbon fiber body, with a revised front bumper to distinguish it from the previous version. The real story is the extra power provided by a bored and stroked version of the previous engine, now churning out 631 horsepower, shaving a half-second off of the run to 60 mph—impressive when you consider that there were only eight of those half-seconds to begin with. Handling improvements weren’t ignored either, as the new springs and dampers have been enhanced with additional “anti-squat” geometry to quell unfavorable movement under braking and acceleration. Drive the LP640 and you’ll be glad Lamborghini likes to fix what isn’t broken.