Custer , in the No. 54 Ken Schrader Racing - Haas Automation Chevrolet , was able to draft with the fastest cars during his four - minute run .
It paid off with a time of 47.769 seconds , an average speed of 188.407 mph .
Custer , in the No. 54 Ken Schrader Racing - Haas Automation Chevrolet , was able to draft with the fastest cars during his four - minute run , and it paid off with a time of 47.769 seconds , an average speed of 188.407 mph .