In the late 1940s, the idea of developing a 30 ton medium tank became increasingly popular. The Medium Tank Concept Chrysler was one such project designed in May 1951. The entire crew was supposed to occupy the tank hull, which allowed the vehicle's height to be decreased to two meters. The tank had good protection, giving it a combat weight of around 40 tons. It was equipped with an opposite diesel engine, which allowed for high top speed and mobility. The unusual track design involved rubber sections with steel crests. However, the vehicle only existed in concepts.