There are many leaf piles on the track. Run through one to reveal a Super Mushroom or Banana Peel . Once you get on top of the tree with the caterpillar creatures, an Invincibility Star may be found in one of the bushes on the left side of the treetop, but not on every lap. You may need to turn off to the left after hitting the bush because the star pops out jumping left(the star if it hits you will receive damage)
This trick requires two or more players. While playing in VS mode. Team racing, draft by following a friend closely from behind. Once you get the boost, go around him or her to take the lead in front of them. Have that friend draft behind you. Keep repeating this to quickly finish a race!