I was travelling cross country a few years ago in a 4 wheeler using my credit card at gas stations. Right about midway in Tulsa, OK it wouldn't work anymore and I had plenty still on my limit. I called the CC company and they had automatically shut it off because they noticed and unusual use. So I told them it was just me driving to Ca and they turned it back on. It was inconvienant for a bit, but I actually appreciated that they at least noticed this and tried to do something to stop potential fraud.