Choose the Forest or Snow level in Joyridin' mode with any car. At your starting point, go straight towards the road in front of you, then turn right towards the "Daves' Flowers" sign. Follow this road until you see a waterfall on your left in the distance. Get off the road and drive towards the waterfall. Once you are in front of and facing it, turn left between the two big boulders. Drive until you hit a dirt road, then turn right. Follow that road to a big road and turn right. Stay on that road until you reach a bridge. Turn right into the river. Follow the river and you will reach the waterfall. Run off it and use the emergency brake trick to flip uncontrollably. You can also go behind the waterfall. Note: The Snow level works best, however you cannot go behind the waterfall in that level because it will be frozen.