well the way the car is attached to the track is the same way a coaster stays on the track, just instead of wheels it's the metal pads. The car is lifted to the top by the catch car which does attach with a hook, there is a device at the top of the tower that retracts the hook and lets the car drop off.
Favorite Wood Coasters: The Voyage, Ravine Flyer II, Thunderhead, Balder
Favorite Steel: Voltron Nevera, Steel Vengeance, Expedition GeForce, Olympia Looping
Parks visited: 232, Coasters Ridden: Steel: 894, Wood: 179, Total: 1073