Song from years ago in which a hippie goes in a biker bar and is intimidated so tries to turn them against each other and runs over their bikes as they chase him around the parking lot as he leaves.?

The song you're thinking of is "Motorcycle Song" by Arlo Guthrie. In this humorous track, a hippie enters a biker bar and finds himself intimidated by the rough crowd. To escape their wrath, he cleverly tries to incite a rivalry between the bikers and then makes a hasty getaway, causing chaos as they chase him around the parking lot. The narrative captures the playful clash between counterculture and the tough biker image.