6 months after the hardtop Murcilago LP640 debuted, Lamborghini has come to Los Angeles with the roadster version. Lambo's LP640 designation means this is the even higher performance version of the Murcilago. LP stands for the engine's mid-engined, longitudinal position - "longitudinale posteriore", and the numeric part means it has 640 horses crammed back there behind the very lucky passengers.