View more pictures of the Koenigsegg CCXR

E85 biofuel results in a higher octane value, making the engine more explosive and creating more power for the Koenigsegg.

The standard 245mph Koenigsegg CCX is officially the fastest production car to lap the Top Gear track when the Stig – who previously crashed one – managed a 1 minute 17.6 seconds bash. 

While it may exceed the Bugatti Veyron’s top speed of 253mph, it may still lag behind the SSC Ultimate Aero’s 257mph it clocked earlier this year.

But the Koenigsegg – which will be unveiled to the world at the Geneva Motor Show in March next year – doesn’t come cheap.

It costs £1,070,040 +VAT, but you get a five year warranty and servicing package.