Gas stations would be my guess, based upon what I've seen. Our UPS driver at least tends to stop over by one right down the road from us. We have a regular dri

Gas stations would be my guess, based upon what I've seen. Our UPS driver at least tends to stop over by one right down the road from us. We have a regular driver, which likely helps create a bond with the staff, so you can skip the need to buy something every time.