A personal transportation and freight delivery system that can be operated as a fully automated driverless land transportation system consisting of vehicles that move on their own propulsion on a pair of overhead parallel steel rails that form a single track and allows people to go anywhere the tracks can take them and delivery of freight anywhere along the tracks. Each profile has a body 32, 34 and a flange 28, 30 which has three zones which are, successively and in the direction away from the body, an anti-seal zone 42, 43, a line-of-weakness formation zone 44, 45 and a sealing zone 46, 47. In another preferred embodiment, the overcoating is a thin layer of oxide created by a chemical anodization process. The rigid member includes a heat resistant plate rigidly mounted to the walls of the cover which include lower edges and upper edges aligned in a common plane.