People don’t usually show up to auto parts and services locations in the best of moods. Cars are absolutely indispensable to most American lives, so a car in need of parts, repairs, or servicing can put a serious strain on its owner. Not surprisingly, most consumers waiting for a smog check, oil change, or tire replacement would like their needs met with minimal time spent. A customer who drives to the local oil change station and sees a long line or full waiting room is likely to drive off and take his or her business elsewhere. No one likes waiting in line, after all.