Wheel-Nut

Overview
Wheel-Nut acts like wall-nut from wall-nut bowling, moving right and bouncing off zombies after damaging them. However, some more mechanics have been added to it. When Wheel nut hits a robot (Robo-Cone, Bug Bot Imp, Shield Zombie etc.) or vehicle (Zomboni, Catapult Zombie etc.) it destroys itself and the vehicle/robot unless its (the zombie's) Health is high.

Strategies
To maximize his damage and efficiency ,it is best to use him against clumps of zombies since you his a zombie more than once. It is inadvisable to use him against vehicles/robots since he will die without much use. Use and Insta-kill or EMPeach instead.

Plant food
When Wheel-Nut is fed plant food, he speed up to x1.5 speed, he does extra damage and he won't die when when he hits a robot/vehicle.

Trivia

 * He is Based of Ball-nut from my first Project, Globe Travels