Which utility is added by drive through windows at fast food resturants?

Drive-thru Windows at fast food restaurants add convenience and efficiency by allowing customers to place and receive their orders without leaving their vehicles. This service caters to those who are in a hurry or prefer not to dine in, enhancing customer satisfaction. Additionally, drive-thrus can help restaurants increase their sales volume by serving more customers in a shorter amount of time. Overall, they streamline the dining experience while accommodating various consumer needs.