Perpetual Skislope
the hollow room writes: "How about skiing on a never ending slope? A story at New Scientist suggests that some fool is going to try to build one of these. Built like a huge tilted record player, it can spin at up to 30 km/h.
Any takers?"
Movies of a working ski-trak!
Okay, it's just a model but they answer the everyone's question about getting on and getting off - there's a stationary area in the middle