Factual error: During the stop in the small town while still in Texas, and Tallahassee breaks all the windows in the minivan, a Bank of Coweta sign is visible over one of the buildings. The Bank of Coweta is a local bank in Georgia, and has no branches outside of the state.
Factual error: When Tallahassee and Columbus open the crashed Hostess truck, a huge pile of individual Sno-Balls packages pour out. A real delivery truck would have the product packaged in boxes on shelves in the back of the truck. Even if a Hostess employee was frantically filling the truck before he fled for some reason, Hostess products come from the factory and distributor in boxes.
Factual error: During action sequences in the amusement park the girls attempt to escape in their Hummer, and a zombie head-butts the passenger window, causing it to shatter. As has been demonstrated on numerous occasions, including a Mythbusters program, tempered automotive glass will not break when struck by a blunt object and that would include a zombie's head. Only a blow from a sharply pointed object will break tempered glass.