Fancy a taste of expensive Bordeaux? Well, you won't have long to wait – Bugatti will take the wraps off its much-rumoured four-seater hyper-car at the Frankfurt Motor Show in September.

Until now, the Veyron's more practical brother has been known as the Royale – but we can reveal that the most luxurious and expensive saloon ever will be called the Bordeaux. And, as you can make out from this shadowy image, the Bordeaux will get a shooting brake-style body with striking horse shoe-shaped tailights. It also gets a split rear window, complete with a dramatic central brake light and, of course, a prominent Bugatti badge.

Inside there'll be space for four and although details have yet to be confirmed, the front-engined Bordeaux is expected to share the Veyron’s 8.0-litre quad-turbo W16.

Giving the same 987bhp and 1,250Nm of torque, it should take the car from 0-60mph in three seconds and on to 250mph, making this the world’s fastest four-seater. Inside is the finest leather, suede and metal trim, plus there’s a generous load area.