1963, Thompson traveled to England, where along with Dante Duce, he demonstrated his Ford-powered top fuel Harvey Aluminum Special dragster at the Brighton Speed Trials. It was then displayed at the Racing Car Show in London in January 1964. 1964 Thompson brought three modified 12-inch-tired cars to the 1964 Indianapolis 500, but new rules required him to use 15-in tires. The Allstate sponsored team used Allstate tires and Ford engines. The chassis had to be altered to accommodate the larger Ford engines. Two of them qualified for the race. The car No. 84 began the month with Masten Gregory as the driver, but Eddie Johnson in car No. 84 qualified 24th and finished 26th. Dave MacDonald in car No. 83 qualified 14th and died in a fiery crash on the second lap. 1965–1968 Thompson went back to Indy in 1965, but failed to qualify in an attempt with a front-engined roadster. He skipped 1966, but tried again in 1967 and 1968, again failing to qualify either year. The 1967 attempt used a unique all-wheel drive rear-engined design that steered both front and rear wheels, but Gary Congdon was unable to qualify any of the three cars. Post Indy In 1965, Thompson published Challenger: Mickey Thompson's own story of his life of Speed. In 1968 Danny Ongais and he took three Ford Mustang Mach 1 to the Bonneville salt flats for a feature in Hot Rod magazine, in the process setting 295 speed and endurance records over a series of 500-mile and 24-hour courses. Together with John Buttera and Pat Foster, developed a Ford Mustang Mach 1 Funny Car with a dragster-like chassis. Driven by Ongais, the car won the 1969 NHRA Spring Nationals at Dallas and the NHRA U.S. Nationals. In his long career, Thompson raced vehicles from stock cars to off-road, and engineered numerous competition engines. He went into the performance aftermarket business in the early 1960s and then, in 1963, he created "Mickey Thompson Performance Tires" that developed special tires for racing including for Indianapolis 500 competitors. Thompson founded SCORE International in 1973, a sanctioning body to oversee off-road racing across North America. With his wife Trudy he formed the Mickey Thompson Entertainment Group (MTEG), which ran an indoor motocross and off-road vehicle racing show and competition that brought the sport from the back-country to major metropolitan stadiums and arenas. Personal life Thompson's wife was Trudy Thompson. On