Recently, on a road trip from my home in Guelph, I headed out on a road trip to Princeton New Jersey.
I was using Google Maps on my phone, but the power drained in my Moto G despite being plugged in.
I was map-less!
So, in the middle of Pennsylvania I stopped at the first gas station, no maps. Went another 50km – no maps at that gas station either. 5 stations later I finally found a map – really small scale of North Eastern States.
So from now on, when the lights go out, I am always going to have a paper version of the map.
Like the boyscout motto: “Be Prepared”
There Be Dragons - Uncharted Internet Mapping 
Great story Gordon! We did two weeks to CA from CO. I bought a western US map at WalMart (got some funny looks when i asked for paper maps). Only twice did i resort to Google and my 11 year old was glued to the map most of the trip, he was the official navigator!