Board Track, Oakland, California

As automobile racing speeds increased, repurposed dirt horse tracks became inadequate. In the 1910s promoters turned to wooden boards, which provided a smooth road surface and were less expensive than bricks or concrete. But rotting wood required frequent replacement. Improvements in concrete and asphalt made board tracks obsolete in the 1930s. California's half-mile Oakland Motordrome operated only from 1911-1912.