Throughout the early episodes when they are supposed to be in Florida, there are clearly rocky mountains in the background. There are no mountains in Florida. This is especially noticeable when they are on the highway "outside Gainesville."
Right before the race teams enter the After Sunset drive-in in Rome, Georgia, Alex Tully is seen madly driving on an interstate highway. There is not an interstate highway within 30 miles of Rome. The aerial photo scene immediately preceding this highway shows - correctly - a non-interstate highway that leads into Rome.