Hello i'm new to 3d printing im fourteen years old and, I enjoy everything it has to offer. So when i heard about this challenge i thought it was perfect way to to show my friends and family that you can make money and, do what you love at the same time. I designed this model on Tinker Cad I got the idea from one of my old science classes this balloon powered aqua car is a great toy for land or water.
fill the balloon with helium and it hovers and bounces off the ground. The wheels act as stabilizers. this link will take you straight to a video of it in action.--
https://www.youtube.com/watch?v=aUkQSjTpn4U
https://www.youtube.com/watch?v=M3GPHQBbqog
https://www.youtube.com/watch?v=ALo0kBqv9vQ

its easy.... Just have fun.