Audi unveiled its 2008 R8, its first ever mid-engine sports cars. It is powered high revving engine which uses Lamborghini Gallardo platform, provides 420 horsepower. The all-wheel-drive Audi R8 boosts from 0-62 mph in just 4.6 seconds. The Audi R8 is being built on a small-lot production line in a specially constructed new block at the Audi plant in Neckarsulm. More images…