Both cars have no license plates when they leave prison. (After the scene where they checked the security tapes)
In a scene set in 1995, Reggie Ledoux is wearing a towel with 'My Little Pony' characters from the 2010 'My Little Pony: Friendship is Magic' reboot.
As Detective Hart is shown following Dewall, they drive through surge barrier gates on the highway. The year is supposed to be 1995. These gates were not constructed until several years after Hurricane Katrina, which struck in 2005.
When Marty's daughter is dropped off in the black Bronco, the narrative suggests the year is "early 2002", but a 4th Generation Toyota 4Runner can be seen in the background. The 4th Generation 4Runner was built from 2003-2009.