Ryan Van Duzer and buddies are currently riding bikes from Maine to Florida. That's bicycles, not motorcycles.

Talk of mysteries! — Think of our life in nature, — daily to be shown matter, to come in contact with it — rocks, trees, wind on our cheeks! The solid earth! the actual world! the common sense! Contact! Contact! Who are we? Where are we? -- Henry David Thoreau, The Maine Woods (1848)