This tour along the closest thing North America's got to an inland ocean leads to placid shores, self-propelled water exploration, giant sand dunes, and the end of are-we-there-yet wining.
The unfettered wilderness of South Dakota ushers forth a road warrior's world of wicked-looking parks, American icons, herds of bison, and more than one opportunity to indulge your inner cowboy. Giddy up!
