Drive-thru commerce starts with the gas station, built so drivers never had to leave their cars, and this episode of Modern Marvels traces how that convenience spread into nearly every industry in America. It moves from the first drive-in restaurants, the ancestors of a fast-food business now worth billions, to stranger outposts of the format: drive-thru dry cleaners, flu-shot clinics, liquor stands, and drug stores. The oddest stops are the drive-thru funeral parlors, where mourners can view a casket without parking, and drive-thru wedding chapels built for couples who want the ceremony over before the light changes. The throughline is a simple business logic repeated across decades, that Americans will pay for speed and will rearrange entire industries around not getting out of the car. The episode closes by asking what might move through a drive-thru window next, treating the format less as a fast-food quirk than as a permanent feature of car-centered commerce.