This creation is inspired by this concept art by Brian Sum: www.artstation.com/artwork/qqJWa. I loved the concept of a giant sphere as the back wheel and 4 stabilizing wheels at the front for steering.
I started using the Duplo ball and then worked on how to trap it in place, which ended up being with the basketball hoop elements. I also quite liked the use of teal in Brian's concept with the hints of orange, so I began with that color scheme. It evolved to be a bit more white with some teal and orange color blocking based on what color and part combinations were available.
I hope you like it! :)