This is my 8-wheeled cube. It is driven by 4 m motors, 2 for each side. It has skid steering to turn.
I wanted this model to have the same abilities as my circular tank, but due to the 4 motors you can only drive when the battery box is horizontal. Otherwise the cube will not move because the motors go against each other. The drivetrain is very simple, the placement of motors is essential. For each side of the cube 2 of the wheels are driven diagonal from each other so no matter the side its on 2 wheels are powered. (1 on each side, also diagonal from each other)
Overall the cube weighs 1 and 1/4 pounds and is very fun to drive, but can sometimes be a bit of a challenge.