wheel rig playblast video

here's my rig..a wheel rig....which i really enjoyed doing.....even though there was math in it....
well...the rig was rigging the wheels of a wooden elephant toy,..usual see with toodlers and i enjoyed doing this rig there were few rotate equations which i used to get the wheel to rotate and a master ctrl has been added and a squash deformer....over all this was the easiest of all the rigs...and really enjoyed doing it...