prepare his driver Patrick Nève, who was the first reserve, for the race, and since de Villota, who was the second reserve, had a last-moment engine failure before the race, Heyer had effectively became the first reserve driver. Because of the crash and commotion on the starting grid at the start of the race, Heyer chose to start the race anyway, slipping out of the pits and joining the pack. Only when his gearbox failed after 9 laps was it realised that Heyer should not have been competing, whereupon he was disqualified. He never attempted another race in Formula One. He is the only driver to be credited with a DNQ (did not qualify), DNF (did not finish), and DSQ (disqualified) in the same race, technically being banned from 5 Formula One races afterwards (which effectively became a lifetime ban because he had no intention to compete any further in Formula One). 1980s In 1980 he won the DRM again, this time for Lancia in a Group 5 Lancia Monte Carlo Turbo, a car he also helped develop. He crashed his 480 hp car badly at the Norisring in Nuremberg, rolling several times. Heyer switched to continuations cooling when control of the water supply failed when the brake light switch failed which had not worked resulting in the left front brake caliper failing which destroyed the tyre rod and a burst affected the front left tyre. He escaped unhurt, but returned immediately to the wreck to recover his famous hat. In the following medical exam, the doctor was said to have been more nervous than Hans was. Heyer won the 12 Hours of Sebring race in 1984 driving alongside Stefan Johansson and Mauricio de Narvaez in a Porsche 935. During the years that the Spa 24 Hours was run as part of the European Touring Car Championship and the inaugural World Touring Car Championship (1982–1988), Heyer won the race three times in succession. He won in 1982 driving a BMW 528i with Armin Hahne and Eddy Joosen, 1983 in a BMW 635 CSi with Hahne and Thierry Tassin, and finally in 1984 driving a TWR Jaguar XJS with Tom Walkinshaw and Win Percy. Heyer retired in 1989 after 999 races in 30 years. 1990s Between 1990 and 1991 Heyer worked at his family concrete works business but came out of retirement to test Mercedes-Benz's truck racing vehicles and competed in