Progress in rail transportation: Next: London to Paris in just over 3 hours, and a fast ride from Oakland to San Francisco for 60 cents

Similar perhaps in technologies, 1973 transportation schemes differed considerably in priorities from nation to nation. The U.S., while toying with the interurban Amtrak network, primarily concentrated on its commuter plans — BART, its already operating model system, and PRT (personalized rapid transit), a scheme for the urban future.