All-stars: Audi R8, Nissan GT-R and Porsche 911 go head-to-head

Three brilliant supercars. All four-wheel-drive. And a road trip to Wales to find our favourite. What could go wrong? Well, as is usually the case with AOL Cars tests, pretty much everything.

Despite planning it weeks in advance, the day we were due to depart Antarctic weather descended on the UK, blocking roads, causing crashes and generally making travelling in a motor car, let alone a supercar, inadvisable.