the drop pattern being randomly selected by a computer before the ride begins. The drop reaches a top speed of . Initially, the attraction's vehicles seated 22 guests, restrained by lap bars; in 2002, the vehicles were each removed a seat from the back row and lap bars were replaced by seatbelt restraints. The design of the 199 ft (60.7 m) tall Tower of Terror was founded on advanced dynamic analysis to model the effects of moving parts on the structural and non-structural elements. Since the facility was intended to provide new and non-repeatable sensations to visitors, a very wide variety of elevator drops and sequences of downward and upward motions, spanning anywhere from 1 floor to 13 floors, were modeled. Each elevator drop mode was analyzed as a time history - in other words accelerations that change in time - applied to the entire structural system. The objective was to push the motion beyond a free fall and provide the thrill to riders while ensuring structural integrity and safety. In addition to the self-weight of the structure, when motors weighing 270 kilo-pounds (123 metric tons) move, the force they exert on the structure is amplified by an order of magnitude. The applied accelerations were tested in the model over a range of 1.0 g (32.2 feet/s/s or 9.81 m/s/s) to 2.5 g (80.5 feet/s/s or 24.5 m/s/s). In addition to strength requirements, the design applied very stringent deflection criteria. In the case of the tower, floors have to support cabs while in horizontal motion in and out of the elevators with minimal deflections to avoid blurry projection screens. On August 13, 2014, video recording was added to the ride's on-ride camera, as an additional offering included with on-ride photo through the PhotoPass service. This was the first ride at Walt Disney World to offer on-ride videos. Little over a month later, on September 18, 2014, on-ride videos were also added to Seven Dwarfs Mine Train at Magic Kingdom, making these the only two rides at Walt Disney World to offer videos and photographs. Ride experience Queue and preshow In the American and European versions of the attraction, guests make their way to the dilapidated Hollywood Tower Hotel through the front gate to enter the queue through overgrown gardens and then enter the hotel lobby. Once in the lobby, guests are ushered to the hotel library, which houses the hotel's