The cup began as a series of cheaply equipped experiments out of Pettit’s curiosity about liquid behavior in space. The project was eventually financed and studied by NASA, with its results published ...

Phoenix Raceway was the latest track to play host to the experiment. Cup Series teams had two sets of option tires to mix into their race day strategy alongside six sets of prime tires.

Joe Gibbs Racing driver Christopher Bell wants NASCAR to return to dirt racing by visiting Tony Stewart's Eldora Speedway.