What-a-Burger is a childhood favorite for those of us born and raised in Concord, NC. If you go don't be shocked by the decor and be sure to have cash on hand. They do not take checks or debit/credit cards.
I usually get a What-a-Burger with cheese (you can also get a Double What-a-Burger if you ask) with a large onion ring and a classic Witch Doctor (a simple mix of all the drinks on tap and filled with pickle slices on top and bottom).
Good food on the cheap. Highly recommend