A few months ago I stopped in our local Casey's to fill up. As I was at the counter paying for whatever else I purchased, the owners son runs over to the window with binoculars after spotting a white car. The owner then informed me that there had been a small string of drive offs from the same white car. I was amazed they hadn't caught the person yet, but even more amazed the same person had come back multiple times.
I can't remember the last time I didn't have to pre-pay for gas. Forgot that was actually an option in places.
They've required pre-payment for gas in my area for years as well, which is why I switched to the credit card payment.
It's a recent phenomenon here, and only in certain places.