About two years ago we ventured to Daytona Beach. We were not impressed. We had a 2 and 6 year old with us. They allow cars to drive on the sand at the beach.
Certain sections are declared traffic-free. When we visit Daytona, we set up camp near the pier and never have to deal with cars.
You can see which areas allow cars (and which don't) on this map:
http://www.volusia.org/core/fileparse.php/4145/urlt/N-Beach-broch-2014c.pdf