Motor Trend heads out to the test track in Audi’s hardcore R8 GT model to see if it has what it takes to battle the world’s top supercars. With 100kg shaved off the weight of the regular R8 – and a 35PS power upgrade, the GT hits 62mph in 3.6 seconds, 124mph in 10.8 seconds and on to a top speed of 199mph – where conditions permit. Just 333 units will be produced, with 33 going to the UK, while 90 will be sent to the US.