A Robot should shoot water bottle caps

The robot should have only 4 wheel. The robot should drive forward and baclward. The robot should only have maxium of 4 any motors. The height should be less than 13 inch. The robot should controlled by an remote. You can't use metal for anything it's should plastic or wood. And finally when the shooter motor go on there also be an green light go on. Thank you. :)

Is there a prize?

Just curious…

It basically sounds like

It basically sounds like you’re describing a robot you’ve already built…