Have you ever wondered which fast-food restaurant has the fastest drive-thru? Or which fast-food chain messes up your order the most? Even which restaurant employees are the most polite? A new study by QSR, a quick service restaurant trade publication, answers those burning questions. They visited fast-food restaurants across the country to study their speed, accuracy, politeness and other factors related to their drive thru’s. Researchers recorded almost 2,000 visits to 15 different restaurants. Chick fil A was voted most polite, which is no surprise! See who topped the other categories, and see if the answers match your experiences here.