Eu concordo com Resposta de Mike Stone que isso é mais provável "As estradas devem rolar" (1940), de Robert A. Heinlein. No entanto, considerando que você o ouviu como um audiolivro, é possível que você tenha realmente ouvido um dos programas de rádio que o tocou, Dimensão X (1950 - 1951) (episódio transmitido 1950) ou X menos um (1955 - 1958) (episódio transmitido 1956). Ambos são gratuitos para ouvir online publicamente.
In the first section of the narrative, the protagonist Larry Gaines is entertaining Mr. Blenkinsop, an Australian who is looking into Road technology on behalf of his government. Gaines's explanation of the Road machinery to Blenkinsop is a device to bring the reader into the world of the Roads.
Larry Gaines, Chief Engineer of the Diego-Reno roadtown, is dining with a guest from Australia, Mr. Blenkinsop, in a moving restaurant on the road, when one of the moving sidewalk strips unexpectedly stops. This causes a chain reaction of people falling from the stopped strip onto the fast moving strips next to it, and vice versa. The entire length of the Road becomes a scene of carnage. Gaines learns that the stoppage was sabotage and that the technicians who maintain the Stockton section of the road are responsible. They have been persuaded by a radical social theory, Functionalism, that their role in maintaining the nation's transport infrastructure is more important than that of any other workers and that they should therefore be in control. Blenkinsop is left behind at one of Road stations as Gaines takes charge of the advance on the Stockton office.
Há um sumário breve para o X menos um episódio que descreve os princípios básicos da história:
Story of future transportation when rolling roads move people and goods, and the men who take care of them. The script is by Ernest Kinoy. The cast includes Wendell Holmes, Ralph Belland many more. Writer: Robert Heinlein