When I started racing in 1973 the AFM used three tracks: Ontario Motor Speedway, Riverside Raceway, and Sears Point Raceway. Of the three, Sears Point was the least developed, the most crude. Today the Ontario and Riverside tracks are gone but Sears Point, now Sonoma Raceway, remains. It’s not a crude, undeveloped racetrack anymore. The page “WT. Growth at Sears Point” tells about the changes there.