First off, this came from @ClassicNortheastAutoRacing and a UL of a ESPN Speedweek episode from October 7, 1986. The full video can be found here:    • October 7, 1986 - ESPN Speedweek  

This is footage from the complete portion of the CART Road America race from October 4, 1986 that was postponed from its original date in September due to heavy rain. To my knowledge, ESPN televised the initial portion of the race, but did not return for the resumed date. if anyone can fill in the blanks here, please do so in the comments.

Enjoy!