I have a concealed carry license in Ohio, and the law now requires the following when stopped...
1. Keep your hands in sight at all times...preferably by keeping them on the steering wheel.
2. When the officer gets to the car, advise as follows: Office, I have a concealed carry license, and I am armed...my weapon is in...(the trunk, glove box, whatever)
Try digging around in your car when the cop walks up even if you don't have a CHL and see what happens...
In FL we don't have to tell the cops unless they ask.