IRVINE, Calif. (KABC) -- A witness' cellphone video shows a woman driving an SUV on the 405 Freeway in Irvine -- with one of the vehicle's front tires missing and the trunk wide open.
The footage, recorded by someone in a nearby vehicle, shows a black Audi moving along the freeway in a traffic lane as sparks fly from the right-front wheel.
At one point the woman appears to wave to the person recording the video. She later exited the freeway and struck a vehicle from behind at an intersection near Quayle Hill Shopping Center.
The woman said her car simply gave out.
No arrest or citation was immediately announced.
"The involved vehicle has been impounded as a part of the investigative process," the Irvine Police Department said in a statement. "Alleged medical conditions can complicate driving under the influence investigations and are a consideration in this case."
The case remains under investigation and will be forwarded to the Orange County district attorney's office, police said.