 Besides these, three 3-wheelers (two passenger-carriers and one cargo), one 4-wheeler (cargo), a crane, an electric 3-wheeled mini-car, and two 2-wheelers (scooters) are either in the process of development or on the verge of launch from the Standard Tractor Division.In the mid-sixties, with the Green Revolution triggering large-scale tractor usage, there was a need for the country to build sufficient indigenous capacity to meet this growing demand.In 1965, the Central Mechanical Engineering Research Institute (CMERI), Durgapur initiated design and development of Swaraj Tractor based on indigenous know how.