In the level: Rat Race, there is a jammer you have to destroy, but it's in a truck that keeps driving to different parts of the city. Even if your speed is maxed, it's still a pain. So, when it stops at the supermarket, jump in the back of the truck, and stay there until you get to the school area. Then blow it up. This way, once you are in the truck, you can control your Meganite, so it doesn't take as much damage from battle.