And finaly after a lot of trial and error we finay got our system working. Because at first one of our wheels was blocked by an elastic band. And then we quite a few problems with the motor itself because it just was not working. At first we weren't sure if it was the motor or the panel that wasn't working. But it was the motor and we fixed it.

AND HERE WE GO THE FINAL PRODUCT:

AND THE MOMENT YOU'VE ALL BEEN WAITING FOR: