Race fans across America, already exposed to spectacular auto racing coverage through MAVTV's "Dirty 30" programming, will delight in this Thursday night's "Spring Showdown"coverage of the April AMSOIL USAC National Sprint race at Tri-State Speedway in Haubstadt, Ind. Airings of the Haubstadt race are at 12:30 and 3:30 pm ET   Thursday's airing is the […]

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