Michael Waltrip Racing was an American stock car racing team that competed in the NASCAR Sprint Cup Series, Xfinity Series, Camping World Truck Series, and K&N Pro Series East. They last fielded the #15 5-Hour Energy/Peak Antifreeze Toyota Camry for Clint Bowyer and the #55 Aaron's Toyota Camry for Brian Vickers in the Cup Series. MWR also operated the #66 Peak BlueDEF/Toyota Toyota Camry for Michael Waltrip and Jeff Burton part-time in conjunction with NEMCO-Jay Robinson Racing under the name Identity Racing Ventures. Michael Waltrip Racing Holdings LLC was a company formed as a 50-50 partnership between Robert Kauffman, the 44-year-old founder and managing partner of Fortress Investment Group, and Michael Waltrip, who first established the team in 1996.