Open Car Carry You may NOT open carry in a car.
A person 18 or older to may possess a concealed firearm in their car, without a license, if the firearm is "securely encased".
"Securely encased" means in a glove compartment, whether or not locked; snapped in a holster; in a gun case, whether or not locked; in a zippered gun case; or in a closed box or container which requires a lid or cover to be opened for access."
A person traveling in Florida without a permit to conceal should do even more research, including possibly consulting a Florida barred lawyer familiar with firearms laws before traveling.
but if you or others have corrections to eash state's carry page summary, John and I would consider it for updating the pages.