Build Your Own Roller Coaster

Usquebaugh submitted this link to a guy who built his own roller coaster. The guy builds grain elevators for a living and - let me take a wild, city-slicker guess - they probably use some sort of rail system for transporting grain, so.... Update: 03/14 14:29 GMT by M : We overran the bandwidth limit on his webpage - sorry buddy! From the comments below I see a mirror and another mirror.