I tried to buy gasoline at a gas station a couple hundred miles from home yesterday as I had to make a delivery there, and I could not because they refused to take cash. The first time I've come across this. Ironically I was able to enter the station and talk to them, however. I did go down the road to the next station which didn't mind cash. Another thing now if you are travelling - fast food joints are drive through only, and they and the gas stations won't let you use the toilets, so we're down to pit stops in the bushes on the side of the road. Not so bad for us guys, but a bit more awkward for the girls.