John Hunter Nemechek is an American professional stock car racing driver. He competes full-time in the NASCAR Cup Series, driving the No. 42 Toyota Camry XSE for Legacy Motor Club and part-time in the NASCAR Xfinity Series, driving the No. 20 Toyota Supra for Joe Gibbs Racing. He is the son of NASCAR driver Joe Nemechek and was the 2012 champion in the Allison Legacy Series.

Legacy Motor Club, formerly known as Petty GMS Motorsports, is an American professional stock car racing team owned by Maury Gallagher and Jimmie Johnson. The team competes in the NASCAR Cup Series where they currently field three Toyota Camry teams: the No. 42 full-time for John Hunter Nemechek, the No. 43 full-time for Erik Jones, and the No. 84 part-time for team co-owner Johnson. The team has a technical alliance with Toyota Racing Development. The team expanded into the electric off-road racing series Extreme E in 2024 with Jimmie Johnson as the primary driver.