While a lot of times the local cops use LIDAR, I have noticed that highway patrol for the most part uses KA band radar here in FL. I usually detect it with my V1 for a good while before I see the trooper. Lookout though because I have seen them use LIDAR from time to time.
FWIW, if you stay around 80/hang with faster traffic, they probably won't bother you.
EDIT: I don't usually travel on 75, but I assume if you're going from West Palm to Savannah, you'll be taking 95?