Each year, more than 50 million guests ride Disney World's iconic monorail train around the theme park.
But the people-mover turned into a thrill ride scarier than any roller coaster last weekend, and one of the park's guests caught the terrifying experience on camera.
Abigail Tilden boarded the red monorail train at the park's Transportation and Ticket Center. But before the vehicle pulled out of the station, she says a maintenance worker spent 10 minutes trying to fix a faulty door on her cabin.
As soon as the train pulled around the first corner, the door popped open, and stayed loose until the train pulled into the park's Epcot station. During that 15 minute ride, the train's average speed is 40 miles per hour, and it travels on an elevated track above roads, trees, and water fixtures.
Tilden shared a video of her scary experience, and you can see passengers anxiously gripping their seats during the ride.
"Guys, you gotta get on this," Tilden wrote on social media, "what if somebody had fallen?"
The malfunction is raising questions about the monorail's safety, and Disney has already made changes to their trains. But this isn't the first time the monorail was involved in a serious accident.
The scary videos are raising questions about how such a serious glitch happened in the first place.
The Disney Blog says the monorail has a door sensor which should alert the train's pilot if a door is open, but that may not have helped in this situation. The system is meant to prevent a train from leaving the station with an open door, but this door popped open mid-ride.
Tilden revealed that the monorail's passengers were "scolded" by park employees for not using the cabin's emergency phone, but she says no one even realized it was there.
Days after the incident, park guests spotted new "Do Not Lean" signs on the door of every monorail cabin.
Disney also says they regret the accident took place, and pulled the train from service immediately after, but Tilden says she'll take the bus from now on.
"I am grateful that the riders were all calm and that the car was not crowded, and that there were no children standing on the train... This could have ended very differently," she said.
While Disney Land uses trains from 2007, Disney World is still using monorail cars from 1989. Although no one was injured in this case, a monorail pilot was killed in 2009 when the pink and purple trains collided, injuring several other passengers.
What a scary video!