Here's part of the Georgia code:

B) Examples of ‘false or secret compartment’ may include, but are not limited to:
(i) False, altered, or modified fuel tanks;
(ii) Original factory equipment on a vehicle that has been modified; or
(iii) Any compartment, space, or box that is added or attached to existing compartments, spaces, or boxes of the vehicle.
(2) ‘Vehicle’ includes, but is not limited to, cars, trucks, buses, motorcycles, bicycles, aircraft, helicopters, boats, ships, yachts, and other vessels.

Now the really scarey part:

(c)(1) It is unlawful for any person to knowingly own or operate any vehicle containing a false or secret compartment.
(2) It is unlawful for any person to knowingly install, create, build, or fabricate in any vehicle a false or secret compartment.
(3) It is unlawful for any person to knowingly sell, trade, or otherwise dispose of a vehicle which is in violation of this Code section.
(d) Any person who violates this Code section shall, upon conviction thereof, be punished by imprisonment for not less than one nor more than two years, by a fine not to exceed $10,000.00, or both.
(e) Upon the arrest of a person who owns or is operating a vehicle which is in violation of this Code section, if the vehicle is not otherwise subject to forfeiture under other provisions of law, or not determined to be needed to be held as evidence, the law enforcement officer shall seize the license plate and registration for such vehicle and shall issue a citation for violation of this Code section and a temporary license plate for the vehicle. The temporary license plate shall be on a form as prescribed by the state revenue commissioner. The temporary license plate shall be valid for 30 days or until the owner of the vehicle provides verification that such vehicle has been repaired so as to eliminate any violation of this Code section, whichever occurs first. Such vehicle shall be subject to inspection by law enforcement and if it is determined that such vehicle has been repaired, the license plate and registration shall be returned to the owner at such time.

Scares me and I use to jump outta planes in hostile
places for a living!!!