Re: Beach driving?
Road trip; http://www.outer-banks.nc.us/newsinfo/randr.htm
There may be others but all will charge for the pleasure and you have to stay on the marked trail/road.
On the east coast there are probably no open areas as all these dune areas are protected for erosion control, wildlife etc.
NH native. A cigar & Euro M/C enthusiast. Full blooded Greek. Proud American USMC 77-81,USMCR 82-88,NHANG 88-91 MOANG 91-95,USAR 95-99,SFC(USA Retired)