The oil change service and car wash service are great. However, most of my visits consist of buying a couple of sodas inside. The cashiers are slow and the line is always long. Often, there is one cashier for 5 or more customers. There is one person that works there all the time, yet he never helps at the register. He just looks busy and irritated (think George Costanza) and never actually helps customers. Please do something to make the line move. Today I was there at shift change (I think) and there were 4 people behind the counter and only one cashing out clients.