In 1969 the project was well over budget and the Germans withdrew from the effort, developing a new main battle tank on their own instead (the Leopard 2). In the US the development continued for a short time, until in 1971 when Congress cancelled the program. The MBT-70 is the "grandfather" of the Leopard 2 and the M1 Abrams, the current main battle tanks of both countries.
In 1969 the project was well over budget and the Germans withdrew from the effort, developing a new main battle tank on their own instead (the Leopard 2). In the US the development continued for a short time, until in 1971 when Congress cancelled the program. The MBT-70 is the "grandfather" of the Leopard 2 and the M1 Abrams, the current main battle tanks of both countries.