Petty, a seven-time NASCAR Cup Series champion and seven-time Monster Mile winner, to make appearances before Würth 400 NASCAR Cup Series race on Sunday, April 28. Petty Family is celebrating its 75th anniversary in NASCAR this season. LEGACY MOTOR CLUB co-owner Jimmie Johnson, an 11-time Dover winner, also to appear on the Monster Monument and race in the Würth 400. Visit DoverMotorSpeedway.com to …