During the second world war certain countries used electric vehicles for activities connected with the war. With the exploration of petroleum resources in the Middle East, it became possible for all industries including automobiles to utilize fuel as the source of energy. When petroleum oil began to invade the automobile market at profitably low prices, electrically- operated vehicles which had previously held sway in the world fell into an insignificant position. Deficiencies or their bad influences in new technologies usually surface after a considerable period of time. True to this phenomenon, poisonous substances such as carbon dioxide, sulphur osice and nitrogen monoxide, all of which are resultant effects of petroleum products, automatically became the major enemies of all beings on earth.
Poisonous gases can cause ice glaziers to melt and also to pierce the ozone layer.
Similarly they are capable of even causing irreparable damage to human and animal lives. Having realized the gravity of this situation, automobile companies such as Ford, BMW and Benz reverted to the manufacture of electric-powered motor vehicles. Consequently the demand for electric-powered motor vehicles increased appreciably in developed countries like England, Germany, France, United States of America and Japan. During the last eight years or so, about 200 electric buses have been operating on an experimental basis in New Delhi, India. When D.W. Senanayake participated in the 12th seminar on electric vehicles held in California in December 1994, a new idea was born in his mind.