We barreled across the Gulf Coast states on I-10. Mobile, Biloxi, New Orleans, and Baton Rouge all whizzed by in a blur. We stopped at each state’s Welcome Center for a few moments to stretch our legs and pick up state road maps (just in case), and by design, avoided stops in the big cities. We were heading to San Antonio, Texas to walk the lovely Riverwalk and explore the historic Spanish colonial missions.