Thursday night the train derailed hitting a station's platform at Times Square near Grand River. About 20 passengers were aboard at the time and no injuries were reported.
"God please don't let us die," said one passenger who requested she not be identified. "The train started shaking and so it started leaning. And we felt like we were all going to fall."
On Friday city officials offered an explanation for what this woman and other passengers say they felt.
"There is a bracket between two cars that have welts and the welt broke," said Dan Dirks of the Detroit Department of Transportation. "And dislodged bracket which took second car of the train off the track. It scraped the side of the station pulling in and sheared one of two parts of door."
An inspection was soon underway. The People Mover shut down so workers could determine what triggered the incident at a time when thousands are visiting the city for the annual North American International Auto Show.
At one point some thought the People Mover was back on track earlier in the day Friday, but city officials say that was a test run.
"We're doing a thorough inspection by our safety folks," Dirks said. "We have the Michigan Department of Transportation here monitoring to make sure we do it in the correct fashion.
"We have contacted the National Traffic and Safety Board and they will do an inspection."
The woman says she has concerns about the people mover and that her leg was hurt during Thursday's incident.
"I was sitting on chair next to pole and my leg got jammed," the passenger said.
City officials maintain no injuries were reported and surveillance video shows passengers exiting calmly in an orderly fashion.
Officials are offering free rides Friday and say the People Mover is safe and they have a track record to prove it.
"This is the first incident in a minimum of 10 years that involved either car, track or anything like that," Dirks said.