This is how you condense press releases: Lamborghini's Gallardo LP 570-4 Superleggera-christened Gallardo weighs less and has more power. Now for the details: it's dropped 154 pounds (70kg), which brings it down to 2,954 lbs (1,340kg) dry, and it also picked up 10-horsepower along the way thanks to some computer finagling. Not only is it faster, the Superleggera is said to be ~20% cleaner and more efficient as well.
The new Superleggera's LP engine (it stands for "longitudinale posteriore", meaning the engine is longitudinally placed behind the passenger compartment) drops 570 horsepower and 540 Nm (398 lb-ft) of torque through an e-gear transmission (6-speed optional) and Lamborghini's all-wheel-drive system.
All that provides a 100km/h (62mph) clip at 3.4 seconds on its way to 325 km/h (202 mph). Thanks to direct injection, fuel mileage comes in at a Lamborghini-claimed 13.5L/100km (~17 mpg US).