Army generator kodak

Is it illegal to ride in a truck bed in Georgia? - truck bed air mattress

My friend told me you can drive a truck without a seatbelt or something in Georgia, while you're over 18 and not yet on the highway. It was strange because the "Law of Georgia Click It or Ticket." I was wondering, is it true what he said?

Also, I was so excited by the idea and wondered if it was a fairly cheap to install seat belts in bed when it is not legal?