There’s no way to figure out just how much Andy Hillenburg has put into Rockingham Speedway, the track he bought at auction for $4.4 million with no guarantee he’d ever return racing to “The Rock.”

Between the money spent to open a dormant race track, the long hours required of a track operator and the lessons learned in understanding how to promote races, Hillenburg has made an unbelievable commitment to the Rockingham, N.C., racetrack.

“All I have,” he said when asked what he’s put into the track. “Everything I ever worked for I’ve put into this, because I believe in what we are doing.”

NASCAR makes its official return to Rockingham on Sunday when the Trucks Series races around the beloved mile-long flat oval. It will be the first NASCAR-sanctioned event since 2004, when a long-term realignment plan led NASCAR to abandon its grass-roots tracks in favor of building up bigger markets such as California, Chicago and Kansas City.

SPEED will televise the Rockingham Truck Series race Sunday afternoon, starting with the NASCAR Camping World Truck Series Setup at 12:30 p.m. ET, followed by the race at 1 p.m.