How does this work?
By jumping over the wall further down the track, we can get set our last section to a location that will be more than
1000 units away from the top of the wall that is by the finish line. Because of this, the game will then fall back to finding the closest path marker to the character which happens to be right behind the finish line. If we clip the wall without getting stuck, we can make the game think we are on the other side of the wall, trigger the finish line while falling, and then immediately be done with part of the race. We then jump back over the wall and cross the finish line to immediately finish the lap.