(3)Notwithstanding anything contained in section 56, no prescribed authority or authorized testing station shall grant a certificate of fitness to a motor vehicle in contravention of the provisions of any notification issued under sub-section (1).[(4) The Central Government may, having regard to the public safety, convenience, protection of the environment and the objects of this Act, make rules prescribing the manner of recycling of motor vehicles and parts thereof which have exceeded their life.]