The Simpsons Season 5 Episode 6

Marge starts hanging out with Ruth Powers from next door,to the annoyance of Homer,who feels neglected. When Chief Wiggum tries to flag the women down in Ruth's car Ruth keeps going,saying that she has stolen the car from her ex-husband. A high speed chase follows in the manner of 'Thelma and Louise',culminating at the top of a canyon,where the women manage to stop in time but Wiggum,with Homer as his passenger,goes flying into the void.