Motor Bikes

The kids both have spoke beads on their bike wheels.  They got them for their birthdays and have always loved them.  But just recently they were talking with their Grandpa who told them he used a clothespin and a playing card to make a motor sound on his back tire.  We had to see if this would work.

 

It does :-) 
I have tried to get this on video, but Evan is so fast it is completely pointless.