How trains stay on tracks around curves Apr 10, 2013 7:09:22 GMT -8 Quote Select PostDeselect PostLink to PostMemberGive GiftBack to Top Post by outfly on Apr 10, 2013 7:09:22 GMT -8 Not related to denim, but I figured someone would enjoy this.boingboing.net/2013/04/10/why-do-trains-stay-on-the-trac.html
How trains stay on tracks around curves Apr 12, 2013 19:49:22 GMT -8 Quote Select PostDeselect PostLink to PostMemberGive GiftBack to Top Post by Steven RFG on Apr 12, 2013 19:49:22 GMT -8 Just watched it! Always love sucking up the info.