Bobby Unser – F5000 1975 Riverside with Warwick Brown #4. Photo Rod McLeod 1975 Mosport. Photo Paul H. Gulde 1975 Mosport. Photo Paul H. Gulde 1975 Pocono with Eagle 755 [01] – Chevrolet V8. Photo Don Struke 1975 Mosport. Photo Norm MacLeod about Bobby Unser