This is the Bugatti 16 C Galibier, which will go on public display for the first time at the Geneva motor show on Tuesday.
It is a concept which heralds the introduction of a new high performance saloon due to go on sale in 2013, commanding a price tag of around £900,000.
Officially the Galibier has been designed to gauge customer reaction to a four door, four seat Bugatti, but insiders are keen to make it once Veyron production ends in 2012.
"This is what the Bugatti team wants to do now we have to convince customers and the [VW] group to make it," company boss Franz-Josef Paefgen told Autocar.
The company is staying tight-lipped about technical details. But technical boss Wolfgang Schreiber admitted that he wanted the production Galibier to "be the world’s fastest, highest accelerating and powerful four-door" and hinted that maximum power would end up at around 800bhp.
The Galibier is four-wheel drive and power comes from the same W16 engine as the Veyron, albeit with twin mechanical superchargers, rather than the four-turbochargers of the mid-engined Sportscar.
And unlike the sportscar the Galibier is thought to have a conventional eight-speed torque convertor automatic transmission, rather than a DSG system.
The doors and wings of the Galibier are made from aluminium, but the rest of the body is constructed from carbon-fibre and Schreiber admitted that the front end of the chassis was also largely made from carbon-fibre to add stiffness and weight.
Insiders won’t comment on the target weight of the production car, merely that it is set to be the lightest car in its class.