So what would it take to make this ride into a roller coaster? Would it have to have a lift hill, be a complete circut, or not be powered by the car itself (the motor is up inside that box in the middle)? This really is right on the fence. Comparing to the poweder coaster the only difference is the fact that the Disk-o is not a complete circut. I think that this should be considered a coaster. Unless someone can give some real solid explanation as to why this dosen't count.
Really the only thing that makes it questionablr is the fact that the ride is powered by a motor that is attached to the car. Other than that, it qualifies.