This is the future of the roller coaster, as told by a jolly 46-year-old Brit named Gino De-Gol, founder of an unusual company called RoboCoaster. What fuels his ambitious vision is a belief that the all-American icon of thrill, circa 2005, is fundamentally a one-trick pony. "You are stuck on a track, you know exactly where you are going, and the ride is always the same," De-Gol says in mock exasperation. What he has in mind is a hybrid ride, one that combines the high G-forces of today´s coasters, the computer-generated trickery of virtual-reality simulators and, eventually, the interactivity of videogames. Propelled through a snaking series of domed theaters, riders will swing far out into a computer-generated universe to come face-to-face with aliens, navigate a pulmonary artery or, if they´re so inclined, chase butterflies through the forest.