Brush Curber is one of the race cars for the Fiber Fuel team in the Piston Cup Racing Series. Brush is a Sherpa Motors Iota GT that is painted orange and yellow, with the number 56 on his doors and roof, as well as the Fiber Fuel logo on his fenders and hood.
"Brush Curber is considered to be one of the most consistent veteran Piston Cup contenders. Curber had numerous top ten finishes in the 2006 season, but a string of mid-season malfunctions severely side tracked his run for the Cup. With help from his Fiber Fuel sponsor and an overhauled diet, Brush purged his losing ways. He also attributes his resurgence to his loving wife of forty years, Katherine, and their fourteen children, Hal, Brush Jr., Penelope, Jake, Marty, Willard, Ingrid, Lucille, Scotty, Wendell, Aimee, Kassidy, Florence and of course Truman."