Driving via the road less travled is great fun but if you are relying on a mobile data connection to follow the google map route – you will discover cell coverage is sparse. So, prior
to departing be old-fashioned and print out the route with the following maps:
Arizona
California
Kansas
Missouri
New Mexico
Okalhoma
New York to St. Louis (start of our 66 trip)
Texas
LA to Sonoma (convention location)
Alfas on Route 66 
absolutely true… a paper map shows you so many possibilities. A GPS map only shows you where you are.