(a) whether the Government has decided to promote the use of vehicles running on clean fuel in the country;
(b) if so, the details thereof;
(c) whether the Government has fixed any criteria in this regard;
(d) if so, the details thereof;
(e) whether the automobile manufacturing companies have started manufacturing such vehicles and if so, the details thereof; and
(f) the steps taken/proposed to be taken by the Government in this regard?