Looks like they have 20 prize packs up for grabs, and each includes a portable grill, grilling tool set, and 2 folding tailgating chairs. Best of all it’s free to enter. 
You can read the rules here and you can enter for the contest here. Contest ends June 23rd, and according to the rules you can enter once per day. Also, for what it’s worth, the race is June 21st and will be televised on ABC. I’ve tuned in the last couple of years and I think it’s a pretty fun road course race.