The Dukes Of Hazzard | Season 3 | Episode 14 | (Duke Vs. Duke)

Episode aired January 23rd, 1981

When Cooter is injured before Hazzard County's annual road race, Luke offers to take the driver's seat of Cooter's car, knowing he will have to race Bo in the General Lee. However, the Dukes learn belatedly that all losing entrants will forfeit their cars to Boss; and they still are unaware that Boss has conspired with Rosco to fill the sheriff's car with a nitro blend of gasoline.

IMDb: https://www.imdb.com/title/tt0567155