sentences:  The layout of Montaña Rusa is unusual in that it has a big PP for a racing coaster, but it is, in fact, a Möbius loop coaster.This coaster design means that a left-track ride will result in a return on the right-track side and vice versa; it also means that the coaster has a continuous track of .Montaña Rusa is one of only a handful of such coasters in the world.