i rode on the bike lanes when they existed and then took to calmer side streets and even sidewalks for a bit on the busier roads. a simple model would be to suggest that water flowing around the outer edge of the tubing can flow more quickly than that flowing on the inner edge. save the kids and yourself the trouble and see it in 2d if you can. this national news story regarding luke perry has me inspired to do more. posts 673 sorry i never got back to you guys. 