From Runners World
http://www.runnersworld.com/general-interest/nascar-driver-proves-hes-got-wheels
"After four hours behind the wheel on Sunday night—engine trouble ended his race 38 miles short of 600—Cassill tore off his flame-retardant suit, tried to wipe the scent of fumes off his skin, laced up running shoes, and hit the road within 30 minutes. He maintained a 7:19 pace as a police escort guided him through the run."
Dude drove 562 miles at average speeds over 145 mph (this includes cautions) and then ran 14 miles at that 7:19 pace
Pretty damn impressive day.