The Gallardo LP 550-2 Spyder, as its name implies, is a convertible that features a 550HP V10 that, unlike the standard Gallardo, directs all its power to the rear wheels. Top speed is 199mph with 0-60mph runs of 4 seconds flat.
Source: Lamborghini LP 550-2 Spyder Unveiled In L.A.
Classic Driver, November 19, 2011