Not bad it seems!
Let's see how it was made, drill three holes to mount the small motor:-
Put on a toy car wheel, drive by friction:-
The solarmax was mounted via a big square hole (circular is better but also much harder to cut), to engage the motor, rotate the solarmax within its hole.
There is no sun around, so I just put it on top of a plastic case to test:-
The prototype which I made last time: