NASCAR Sprint Cup Series driver Carl Edwards will make a special appearance as a guest judge on Discovery Channel’s The Big Brain Theory: Pure Genius on Wednesday, June 12 at 7 p.m. ET. In the episode, Edwards must help determine which one of four semifinalists can most successfully bring a speeding car to a safe stop.

The Big Brain Theory: Pure Geniusfeatures seemingly impossible engineering challenges to be solved by contestants each week. Competitors have just 30 minutes to come up with a solution using their own intellect to complete the challenge, and based on logic and design, the expert panel of judges will determine the best engineering concept and select two captains to lead their team to execute the project. The team with the best design will remain safe, but the losers will face the judges who will determine which member will be eliminated.