(a) whether the Railways have set up a Joint Working Group for plant sapplings on the vacant land along the rail lines in order to produce bio-diesel from the seeds of plants;
(b) if so, the details thereof;
(c) whether bio-diesel is likely to be cost-effective and environment friendly;
(d) if so, the details thereof? and
(e) the progress of the Research and Development (R&D) studies conducted in this regard?