Krauss-Maffei's Transurban was a 12-passenger automated guideway transit (AGT) mass transit system based on a maglev guideway. Development started in 1970 as one of the many AGT and PRT projects that followed in the wake of the HUD reports of 1968. Its selection as the basis of the GO-Urban system in Toronto in 1973 made it well known in the industry; it would have been the basis of the first large-area AGT mass transit network in the world. Technical problems cropped up during the construction of the test track, and the sudden removal of funding by the West German government led to the project's cancellation in late 1974. The Ontario government completed development and installation of a non-maglev version, today known as the Bombardier Advanced Rapid Transit.
The publication of the HUD reports in the US in 1968 led to a wave of developments in the mass transit world. Dozens of companies around the world started development of AGT systems from large to small, hoping to cash in on what was predicted to be an enormous buildout of AGT systems. The majority of these systems were essentially smaller versions of rubber-wheeled metros, sometimes operating as a single car, but often in small trains. On the simpler end were systems like the Vought Airtrans and Bendix Dashaveyor, while more complex systems include the Alden staRRcar and Cabinentaxi which were true personal rapid transit systems (PRTs).
By the early 1970s many of these systems were developed to the point of being ready for deployment. In an effort to drum up business, the Urban Mass Transit Administration provided $1.5 million to four companies to bring their systems to the Transpo '72 show in Washington, DC where they were arranged as the central exhibit. Expecting numerous orders to follow, both the companies and Congress were dismayed to find a lack of interest on the part of city planners, for whom the systems had been designed and funded. This was generally blamed on the hesitations on the part of the mayors to deploy a system that was not already in use elsewhere.