In July 1964, General Motors Corporation presented a project for a main battle tank (MBT). It combined cutting-edge tank-building trends of the early 1960s: a lowered silhouette, high mobility, hydropneumatic suspension ensuring smooth movement without the ability to change clearance, as well as combined armor for HEAT shell protection. The designers planned to arm the tank with a 120 mm gun or a 120 mm gun/launching device, and their decision to mount TV cameras on the rear of the turret to boost the view range and ease reversing was even ahead of its time. They also paid great attention to mitigating radiation impact. The project stopped at the full-scale prototype stage, but all the developments formed the basis for a promising 1970s American tank: the MBT-70.