Not every exciting ride has to be powered; sometimes you can do it yourself, like the walkable roller coaster, or gravity can do the work for you. Here is a wonderful looking ride on rollers down the side of a hill, beautifully filmed by Eiji. Fast, fun, and it probably feels like one of those roller massage things. You then get a good workout climbing the hill again. Every park with a hill should have one of these!
Found on NOTCOT