As seen in the photo above, the Fiat 500e used was a test car for visitors of the show. Fiat Chrysler is one of 11 car companies providing vehicles for guests to try out. The Times also reports that an LAPD spokesperson said the driver of the Fiat may not have had a valid license. It's surprising this wouldn't have been noticed when the driver signed up, as the LA auto show's test drive rules state that a valid license is required to drive.
As of this writing, it appears that the show is continuing as normal, along with test drives. The show is open to the public until November 27. Car companies will also be offering test drives throughout the week, including the last day of the show.