One of five S4-based race cars built by Richard Lloyd and Audi Sport UK for Speedvision World Challenge GT competition, ASUK-004 raced with Derek Bell in 2001 and 2002, Michael Galati in 2003, and Randy Pobst in 2004. It was updated to Evolution specification with larger turbochargers, a viscous-coupling center differential, and weight reduction, then campaigned by the seller with GMG Racing at the 2024 Monterey Motorsports Reunion.