When the ends of the "runway" are clear more runners are spawned. Runners that push to the edge are destroyed.
If you move a runner too fast he will swap places with another runner. This is not good.
The runners sort of squish up on top of each other instead of acting truly "solid". This is not good.
I would like my "runners" to act like boxes on a track. Grab one box and push it and it pushes the other boxes. Pushing a box too fast won't allow it to pass through the box its against!
How do I make the boxes follow each other?