Winston Cup races after Talladega, and the presumption by sports commentators in late 1973 was that he was retiring from the sport. Ultimately, Isaac did return to NASCAR racing as a driver from 1974 through 1976, on a reduced schedule. Land speed records Isaac also made his mark outside of NASCAR. In September 1971, he went to the Bonneville Salt Flats in Utah and set 28 world speed records, some of which still stand. Awards Bobby Isaac was inducted into the National Motorsports Press Association Hall of Fame in 1979, and the International Motorsports Hall of Fame in 1996. In 1998 NASCAR honored Isaac as one of its 50 greatest drivers. On May 20, 2015, Isaac was announced as a member of the 2016 induction class to the NASCAR Hall of Fame. Death On Saturday night, August 13, 1977, while running fourth, Isaac pulled out of the Winston 200 late model sportsman race at Hickory Motor Speedway with 40 laps left, and called for a relief driver, collapsing on pit road of heat exhaustion. Weather reports for the area that day showed temperatures which had reached at mid-afternoon, and were still around at the time of Isaac's collapse. Though Isaac was revived briefly at the hospital and was conversing with friends, he later died from a heart attack caused by heat exhaustion, at 12:45 a.m On August 14, 1977, 13 days after his 45th birthday. Details of Isaac's pit lane collapse on the night of his death were given to reporters by friend and former racing driver Ned Jarrett. Jarrett asserted at that time that the reason Isaac left the 1973 Talladega 500 was because he "had heard a voice that told him to quit". Motorsports career results NASCAR (key) (Bold – Pole position awarded by qualifying time. Italics – Pole position earned by points standings or practice time. * – Most laps led.) Grand National Series Winston Cup Series Daytona 500 References External links Biography, part 1 Biography, part 2 Bobby Isaac: NASCAR's First Modern Champion 1932 births 1977 deaths People from Catawba, North Carolina Racing drivers from North Carolina Land speed record people NASCAR drivers NASCAR Cup Series champions International Motorsports Hall of Fame inductees USAC Stock Car drivers NASCAR Hall of Fame inductees Racing drivers who died while racing