Byte and the_reject are correct. Actually, so are you gilfrd. You aren't
required to show it. However, several LEO friends of mine say if you get pulled over, do the following:
1. Don't make any moves, like tucking things under the seat or in the glove box. The cop will see the movement and be suspicious.
2. If it's dark out, turn the dome light on.
3. Keep your hands on the steering wheel so the officer can see.
4. When asked for a drivers license, hand the CCW card to the officer with your license. You don't have to inform the officer what you're carrying or where, but hand over the card. He'll find out soon anyway.
Do what you want within the limits of the law. But, going out of your way a little to help put the officer at ease isn't a bad thing. They have a tough enough job as it is. A few of my LEO buddies say they still get nervous with every traffic stop.
Oh yea, if it's P806 or GAcop that stops you, just give them the finger.