Born in Haddon Township, New Jersey, Donohue grew up in Summit, graduated from the Pingry School in Hillside, and entered Brown University in Providence, Rhode Island. At the age of twenty-two, while a senior at Brown, Donohue began racing his 1957 Corvette. He won the first event he entered, a hillclimb in Belknap County, New Hampshire. He graduated from Brown in 1959 with a bachelor's degree in mechanical engineering.
Ford GT40 and joining with Penske
In 1966, thanks to his friendship with Hansgen, word quickly spread to the Ford Motor Company about the young driver. Ford immediately signed Donohue to drive one of their GT-40 Mk II race cars campaigned at the 24 Hours of Le Mans by the Holman & Moody racing team. Le Mans proved frustrating for Donohue. Hansgen died while testing the GT40 in preparation for Le Mans so Donohue partnered with Australian Paul Hawkins. Donohue and Hawkins only completed twelve laps due to differential failure and finished 47th. Earlier that year, co-driving with Hansgen, Donohue finished third at the 24 Hours of Daytona and second at the 12 Hours of Sebring.  At Hansgen's funeral, Roger Penske spoke to Donohue about driving for him. In his first race for Penske, at Watkins Glen in June 1966, Donohue qualified well but crashed the car at the top of a hill, destroying it.  Donohue was invited back to Le Mans by Ford in 1967. Ford had developed a new GT, the Mark IV. Donohue co-drove in the No. 4 yellow car with sports car driver and race car builder Bruce McLaren for Shelby American Racing. The two drivers disagreed on many aspects of racing and car setup, but as a team were able to muster a fourth-place finish in the endurance classic.  In 1967, Penske contacted Donohue about driving Penske's brand new Lola T70 spyder in the United States Road Racing Championship. Donohue dominated the 1967 race, driving a Lola T70 MkIII Chevrolet for Penske. Donohue raced in seven of the eight races that year, winning six (at Las Vegas, Riverside, Bridgehampton, Watkins Glen, Pacific Raceways, and Mid-Ohio) and finishing third at the Laguna Seca Raceway round behind Lothar Motschenbacher and Mike Goth.  In 1968, Donohue and Penske returned to defend their USRRC championship with the McLaren M6A Chevrolet. Donohue did not start the first race of the year at Circuit Hermanos Rodriguez in Mexico City due to problems getting the engine to start. Despite this, Donohue still dominated the series, even though he suffered three DNFs during the season due to mechanical problems with the M6A.
What does Mark have to do with the ford GT40?
Donohue was invited back to Le Mans by Ford in 1967.
Donohue was invited back to Le Mans by Ford in 1967.