In principle, this vehicle actually looks like two mono wheels next to each other. The outer wheels are two tracks that are attached in the opposite direction so that you get this round shape. In that circle you attach 3 wheels of which 1 wheel is driven by a motor. You form a bottom by attaching a heavy weight under the center, in this case it is the ev3 stone.
The vehicle is controlled via bluetooth with the app "EV3 Pad + Remote".
The building instructions are unfortunately not possible due to the triangular shape to hold the wheels.