USP Motorsports, a Florida-based outfit run by Chris Green, is the builder of this unassuming high-horsepower B5 Audi S4. Well, unassuming if it weren’t for the road-legal semi-slicks at all four corners and hugh parachute mounted on the boot lid that is. Minus the parachute perhaps, this S4 would win our vote for street sleeper of the month.
How does 616 kW at the wheels sound to you? If that’s not impressive enough – consider that this turbo VR6-powered beast is capable of a 9,61 quarter mile pass at 246 km/h!