Your heart is beginning to race, but you haven't even left the changeover station. Your hands are so clammy that it is difficult to grip the waist-level handles. Three. Two. One. The train shoots out of the station and roars part of the way up a spiralling incline. Losing energy, it then hangs for a moment before reversing back down the tower and through the station, where a boost of energy sends it soaring 150 feet up a vertical back-spike. On the next forward surge it spirals fully 180 foot all the way up the front corkscrew, before reversing once again up the back-spike, where powerful brakes take hold at the top to bring the 28-seater, seven-car train to a standstill. Hanging there, you have time enough to contemplate the ground far beneath you as you await the next drop...
This is Vertical Velocity at the sprawling Six Flags Great America theme park; one of numerous high-octane, adrenaline spiking rides, but really after that, will you be able to cope with any more?