Auto Club Speedway is off I-15 at Fourth St., following signs to 9300 Cherry Ave. The grandstand of this 2-mile, D-shaped track seats more than 92,000; the infield offers more than 1,800 reserved spaces for RV camping. The track opened in 1997 on the site of the former Kaiser Steel Mill. NASCAR's Auto Club 400 is held in March. The speedway also hosts the Southern California Historic Sports Car Festival in late April. On the site's north side is the quarter-mile Auto Club Dragway, host of many NHRA events. AAA is the Official Motor Club of Auto Club Speedway.