Video - Rolls-Royce unveils fastest ever convertible claimed to be quietest topless car on the road

Under the bonnet of the 5.2-metre long car is a 6.6-litre V12 engine which develops 563bhp.

This gives the 2.5-tonne convertible a 0-62mph time of just 4.9 seconds and an electronically-limited top speed of 155mph - making it the quickest ever convertible Rolls-Royce. It is also one of the most expensive new cars on the road.

Prices for the luxury convertible will start at around £250,000 - although customers will spend thousands more customising their model.

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