where is Auto Club Speedway located?
SELECT T2.Location FROM race AS T1 JOIN track AS T2 ON T1.track_id   =   T2.track_id where T2.Name  =  'Auto Club Speedway'
location of Auto Club Speedway refers to T2.Location; using JOIN to combine race and track tables based on track_id; filtering condition is T2.Name = 'Auto Club Speedway';