Learn your customers names,preferences and vehicles. It encourages: repeat business,safety and builds lasting relationships. Example Julie drives a blue buick,prefers cappacino in the am and smokes basic light 100s soft packs..In the evening she stops by for sports drinks and often forgets to buy ice for them with out a reminder . Trace gets three two dollar lottery tickets,pall malls and coffee every day at 630 am, on his way to work offer him a donut for breakfast . This makes your job and the customers day easier.