‘The 306 GTi-6 engine thrives on revs in the 16-valve tradition ... but stay with it and it spins productively all the way to the 7200rpm red line. ‘It is road-optimised; on a track it ...

Called the GTI W12-650, this VW is a spectacular display of radical thinking and engineering expertise powered by a 6.0-litre twin-turbo ... while the carbon fibre roof, red-edged radiator grille ...