him the first American to win a Formula One race. The 1961 race saw the death of Wolfgang von Trips and fifteen spectators when a collision with Jim Clark's Lotus sent von Trips' car airborne and into the barriers on Parabolica. Although the accident did not occur on the oval section of the track, the high speeds were deemed unsafe and F1 use of the oval was ended; future Grands Prix were held on the shorter road circuit, with the banking appearing one last time in the film Grand Prix. New safety walls, rails and fences were added before the next race and the refuelling area was moved further from the track. Chicanes were added before both bankings in 1966, and another fatality in the 1968 1000 km Monza race led to run-off areas added to the curves, with the track layout changing the next year to incorporate permanent chicanes before the banked curves – extending the track length by . The banking held the last race in 1969 with the 1000 km of Monza, the event moving to the road circuit the next year. The banking still exists, albeit in a decayed state in the years since the last race, escaping demolition in the 1990s. It is used once a year for the Monza Rally, which served part of the 2021 World Rally Championship, which was the first FIA championship event since 1969. The banked oval was used several times for record breaking until the late 1960s, although the severe bumping was a major suspension and tyre test for the production cars attempting endurance records, such as the Ford Corsair GT which in 1964 captured 13 records. Circuit changes and modernisation Both car and Grand Prix motorcycle racing were regular attractions at Monza. These races involved drivers constantly slipstreaming competing cars, which produced several close finishes, such as in 1967, 1969, and 1971. As the speed of the machines increased, two chicanes were added in 1972 to reduce racing speeds – the Variante del Rettifilo at the middle of the start/finish straight, and the Variante Ascari. This resulted in a new circuit length of . Grand Prix motorcycles continued to use the un-slowed road track until two serious accidents resulted in five deaths, including Renzo Pasolini and Jarno Saarinen, in 1973, and motorcycle racing did not return to Monza until 1981. The 1972 chicanes were soon seen to be