Here's the best one I can find: http://ersilia.net/origami/docs/vicroads.pdf http://ersilia.net/origami/docs/vicroads.pdf Up to 58% increase in average speed i

Here's the best one I can find: http://ersilia.net/origami/docs/vicroads.pdf http://ersilia.net/origami/docs/vicroads.pdf Up to 58% increase in average speed in one test, which was probably the figure I was thinking of (it was a while ago!)