 Prince, an Englishman, had emigrated to the United States after the end of his racing career and developed a thriving business building velodromes.By 1909, Prince had built the Los Angeles Coliseum Motordrome, a velodrome-like motorcycle racing facility that was just over in circumference.Around the time that Moskovics' career brought him to Los Angeles, in 1909, Carl Fisher was developing the Indianapolis Motor Speedway, and automobile racing was gaining momentum as a business.