DoorDash and Klarna have announced a new partnership allowing customers to buy fast food and pay later in four interest-free installments. This service, available for orders over $35, offers more flexibility to diners. However, experts warn that consumers may face significant risks if they miss payments, leading to unexpected late fees. Consumer Reports' Chuck Bell cautions that failing to pay on time might result in a much pricier meal than anticipated. The initiative raises concerns about consumer debt and spending habits in the current economic climate.