During the Second World War American servicemen stationed in Europe began to experience the benefits of the nimble British sports cars, and many shipped them home on their return. There were no legal restrictions to this behavior until 1967. Some owners even acted as sales reps for manufacturers who were happy to help, leading to official imports and the British sports car craze in North America. As with future waves of imported cars, this led the U.S. automakers to respond by introducing home grown models, such as the Chevrolet Corvette.