I made this loop for the Dynamic Machines challenge. The goal was to have a chrome ball start at the top and move to the bottom and we could add whatever shenanigans we wanted in the middle.
I thought it would be cool if the ball was a bit useful. So I have the ball give the mechanic a wrench, re-position the fan and send the mechanic a cloth. But maybe the ball isn't too helpful, as it slams into the car. :)