by RussNelson
This video explains how to make your own speeder for use on abandoned railroads:
http://www.exploratorium.edu/maker/index.php
(scroll down to "Making a Train Car with Paul Cesewski"). Unfortunately, while he says that he's only using it on abandoned rails, he doesn't emphasize the danger of using it on non-abandoned rails.
http://www.exploratorium.edu/maker/index.php
(scroll down to "Making a Train Car with Paul Cesewski"). Unfortunately, while he says that he's only using it on abandoned rails, he doesn't emphasize the danger of using it on non-abandoned rails.