[2] Along with frame builder Steve Potts and his helper Mark Slate, Cunningham co-founded Wilderness Trail Bikes (WTB).
[citation needed] Cunningham and his wife, Jacquie Phelan, are charter inductees to Crested Butte's Mountain Bike Hall of Fame.
[2] Cunningham came from an air force family and lived in Alabama, Virginia, Japan, and San Diego during his childhood, ultimately settling in Mill Valley on Mount Tamalpais, Marin County.
His mother, Carol, was a book artist whose imprint Sunflower Press is found in several museum collections.
Cunningham built a total of 187 aluminum bicycles (the Indian, the Racer, and the Wombat for smaller people) between 1979 and 1992.