We had the track covered with 4 strip magnets. And the car had 4 disk magnets on the bottom in each corner. The original plan did not work because it was not balanced. We took away the 2 middle strip magnets and added those 2 strip magnets to the side of the track . We added one on each side. We also took away the disk magnets on the bottom of the car, and made them strip magnets on the sides. 

There were 4 strip magnets on the track there were 2 stacked up on each side that repelled the car so it could levitate because we pushed through the problem of the car not being balenced.  So if there was a magnet on the bottom there would be a magnet over it. It is fun , and takes more than 1 try. And yes, creating was my favorite part.It was really fun to work in a group.