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.
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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.
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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.