First shown as a concept in 1997, the W12 was all set for production (as the 'Nardo') until VW pulled the plug in 2002. This is a sad loss to the supercar world as performance promised to be astounding. The 6 litre W12 engine gave a 500bhp/ton power to weight ratio, enough for 0-60mph in just 3.3sec and a 217mph top speed.