VHS_SpeedMachines[VHS: Discovery Channel – 1996 – 52 mins]. Strictly for those who love roller coasters. Witness unique design and breathtaking construction as we interview the people behind such machines, including John Wardley. Today, ultra modern computer technology is employed to design roller coasters, offering the thrill-seeker the tallest, fastest, most thrilling and daring twists and turns, loops and corkscrews in complete safety. German narration throughout. (Also available on DVD with Portuguese and English narration / Original broadcast title: Extreme Machines – Roller Coasters). ANDY SHINE SAYS: An educational programme that takes a look at the design and construction of roller coasters. The film also attempts to provide a psychological profile of a typical thrill-seeker, which adds a nice touch. ANDY SHINE’S RATING: Good / Recommended.