A £1 million open-top version of the Lamborghini Reventon is reportedly being shown to potential customers.

It is thought that just nine open-top Reventons will be made, making it even more exclusive than the original Reventon, which was limited to 20 cars, plus one for use by Lamborghini.

See the Lamborghini Reventon picture gallery here

The original Reventon cost around £675,000, and just one was sold to someone based in the UK.

As well as losing its roof, the open-top Reventon is rumoured to be powered by the LP670-4 SV's 661bhp 6.5-litre V12, which has 487lb ft of torque, making it marginally more powerful than the 'standard' car.

The Reventon is named after a Mexican bull that killed a toreador in 1943. The tin-top Reventon was described by Lamborghini as an art-house Murcielago LP640 inspired by the F22 jet, a state-of-the-art fighter built by Lockheed Martin.

When contacted by Autocar, a Lamborghini spokesman said the reports were "just speculation".

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