One of the stars at the 2015 IAA – the mighty Bugatti Vision Gran Turismo, has been recorded starting up its engine and slightly revving it.

Obviously, the mean concept is a fully operational vehicle and it has been filmed starting up its engine and being driven through the halls of the Frankfurt Motor Show. The W16 quad-turbo engine has a rich note that sounds monstrously even when idling.

Believed to be previewing the Veyron successor, the study has a four-wheel drive system and based on the company's calculations it can reach more than 400 km/h (250 mph). The production Chiron supercar is expected to debut at next year’s Geneva Motor Show in March.

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