Benefits from: The car is started from above and accelerated so that it travels upside down through the loop and arrives at this curve. Gets a boost, then cruises back on the level ground. funny Inadverse aspects: Accelerating a machine requires repeatedly pressing the start button. Or you can choose to run the machine backwards if that's what you'd want. When entering the turn, the track length must be adjusted so that the car does not "jump out." There was either too much slowness or too much fastness, thus I had to switch the songs numerous times to find the sweet spot.