This is a test that has yet to happen in real life, partly because both Bugatti and Ferrari would set a number of conditions before such an official drag test were ever to to be agreed and agreeing terms would probably take years. Thanks to video console games such as Forza 5 car fans are pitting one against the other within the confines of the virtual space. The Bugatti Veyron SS (Super Sports) is the final production version of the Veyron, the engineers have extracted 198bhp more from the standard 987 bhp to give a total output of 1184bhp  and nearly 15ooNm of torque from the 8.0-litre W16 engine. Top speed is rated at 268mph and the 0-62 time is dispatched in 2.5 seconds. Cost £2m. The Ferrari La Ferrari is a fusion of Hybrid technology and that traditional V12, it has a combined power out put of 950bhp and 900 Nm of torque. Top speed is 219mph and 0-62mph is covered in a shade under 3.0 seconds. Cost £1m. So the Bugatti wins this on paper right? however the La Ferrari weighs in at a lightweight 1255kg whereas the Bugatti SS is nearly 2000kg, its all down to the power-to-weight ratio again isn’t it. But in Forza the Bugatti SS, despite the weight disadvantage, walks it. That said if you want to go half a second quicker than a Ferrari La Ferrari it will cost you £1m.