Since we're talking old-school, this was still back when they designed a game, and then never bothered to put an ending in it.
So you're in a little red car and you avoid, or make other cars crash. And you get oil slicks, smoke or a lame missile that only shoots down the helicopter. I remember being a kid and making it to the boat stage, then back to the car stage. Then I realized there was no ending. Lame.
And did you know that if you make it to the winter stage with the icy road and spun out a certain way you would just spin around forever and not crash?