History: (3) Other Developments: Only two APMs were developed as a part of the People Mover Program, the Metromover in Miami, and the Detroit People Mover. Although these government-funded systems were generally considered failures, several APM systems developed by other groups have been much more successful. Notable among these systems are theDocklands Light Railway deployed in London, while the French Véhicule Automatique Liger and the Canadian Bombardier ART have both won developments around the world. The Vancouver SkyTrainsystem is the largest fully automated metro system in the world, with over 60 km of track. These systems are on the "heavy" end of the APM scale. Lighter systems with shorter tracks are widely deployed at airports; the world's first airport people mover was installed in 1971 at Tampa International Airport in the United States. APMs have now become common at large airports and hospitals in the United States. Driver-less metros have become common in Europe and parts of Asia. The economics of automated trains tend to reduce the scale so tied to "mass" transit (the largest operating expense is the driver's salary, which is only affordable if very large numbers of passengers are paying fares), so that small-scale installations are feasible. Thus cities normally thought of as too small to build a metro (e. g. Rennes, Lausanne, Brescia, etc). are now doing so. On September 30, 2006, the Peachliner in Komaki, Aichi Prefecture, Japan became that nation's first people mover to cease operations