Cars

Cars have no wheels in the cube. Why? There would be too much abrasion and too little space. So the leading tire manufacturers got together and invented omni-grav technology, effectively eliminating the concept of up and down.

The D1

The D1 is the original car designed for everyone in the cube. It comes in red, white, yellow and pink. This is also why it's missing wheel wells, it was built with omni-gravity in mind.