Monday 17th November 1986
Racing driver Rick Mears set a US closed-course record at the Michigan International Speedway. Mears was timed at an average speed of 233.934 mph (376.48 km/h), breaking the record set by Mark Donahue in 1975.
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Racing driver Rick Mears set a US closed-course record at the Michigan International Speedway. Mears was timed at an average speed of 233.934 mph (376.48 km/h), breaking the record set by Mark Donahue in 1975.
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