It's not often that Lamborghini unveils a new machine, but when it does it's usually reason to get rather excited. And it's no different this time around, as the new Murcielago LP640 Roadster is, quite simply, stunning. Unveiled in Los Angeles, and then later at the Bologna Motorshow last week, we were among the first to see this raging bull in the flesh.

Since the Murcielago was launched in 2001, I've often wondered if it is, in fact, possible to improve upon its style. It's as if Lamborghini has created the perfect looking car. Well I don't think the LP640 quite betters the clean lines of the standard version but, my god it's a good-looking car! The bumpers - if that's an appropriate way to refer to the works of art hung from the front and rear of the LP640 - have been redesigned to strike a more aggressive pose; the rear lights are also new, making the Murcielago as jaw-dropping at night as it is in daylight.

Of course, it wouldn't be a Lamborghini if it was all show and no go. As with the coupé LP640, the Roadster is fitted with a 6.5-litre 631bhp V12 that makes the already stupidly quick Murcielago insanely fast. The 0-62mph sprint takes just 3.4 seconds and top speed is a frantic 205mph. The torque band has also been paid particular attention, with the 487lb.ft available well spread throughout the rev range, making driveability far better.

The increase in power has obviously required a few tweaks elsewhere. The four-wheel drive system has been beefed up with stronger half axles, a new differential and a new six-speed gearbox has been fitted with the 'e-gear' programmable automated manual 'box available as an option. Handling has also been improved with the addition of uprated springs and stabilisers and the brakes have been overhauled.

For the even more flamboyant, Lamborghini has teamed up with Versace to offer a specially trimmed interior, complete with famous Greek 'fret' motifs on the seats - Maison Versace's distinctive emblem.

Will Nightingale - 12 Dec 2006