Heim, 21, competes full-time in the NASCAR Truck Series, where he has won several races. But he is also the reserve driver for Legacy Motor Club so when Erik Jones suffered a back injury in a 70G crash at Talladega Superspeedway, Heim was called up to drive the car in his absence.
He has never competed in a NASCAR Cup Series race before, but will make his debut at the circuit commonly referred to as the 'Monster Mile' — Dover Motor Speedway. It is a challenging one-mile concrete track with aggressive banking and little margin for error. It's known for wild wrecks and multi-car pileups. In Saturday practice, there was already a vicious crash involving Kaz Grala, who was able to walk away.
