The Uber ride-hailing service says riders complained Saturday night about Jason Dalton's driving. Matt Mellon says he was a passenger about an hour before the 45-year-old started shooting people.
"We were kind of driving through medians, driving through the lawn, speeding along, then finally when he came to a stop, I jumped out of the car and ran away," Mellon said.
According to investigators, Dalton continued working during the rampage, picking up customers.
"I like half-heartedly joked at him and said ‘you’re not the shooter, are you’ and he said ‘no,’ and I said ‘are you sure,’ and he said ‘no, I'm just really tired’."
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In between those two memorable rides, police say Dalton opened fire at three locations over the course of seven hours. In all, eight people were shot, six of them killed.
Uber says Dalton passed a background check and became a driver on Jan. 25. According to the company, he had given about 100 rides.
It's a service that is used a lot here in Charm City.
"Just about every day at this point,” Dani Gallagher said. “Just to get around the city."
"We've used it in several cities around the country,” Peter Deluca said. “Overall it's always been a fun, easy experience."
"Never had any problems, usually reliable, on time, not hard to find the car," Jillian Deluca said.
Recently, accusations of rapes and robberies committed by Uber driver has raised red flags about the company's background check process. On its website, Uber states it relies on a third-party to handle the checks, cross referencing driver's Social Security numbers, vehicle registration and licenses against court records and criminal registries.
There has been a push nationwide for Uber to have stricter background check policies.
"If you have a license you can be an Uber driver, so year, it definitely makes me think twice about it sometimes," Jessica Wygant said.
"I don't think the problem is an Uber specific problem,” one man said. “It's just kinda the nature of any service, someone comes to your house for a repair, people are not all good people."
"Honestly, there's just crazy things that happen all over the country, and you can't be scared to go out and do what you normally do,” Deluca said. “So it wouldn't deter me from using a car service such as Uber or any of the other ones in the future."
Police have not provided a motive for the mayhem in Michigan, and the shooting victims have no apparent connection to Dalton.
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The Associated Press, ABC News and CNN contributed to this report.
