Proposal for a Council Decision on the position of the European Community on the draft Regulation of the United Nations Economic Commission for Europe concerning the approval of uniform provisions concerning the approval of (i) Specific LPG retrofit systems to be installed in motor vehicles for the use of LPG in their propulsion system (ii) Specific CNG retrofit systems to be installed in motor vehicles for the use of CNG in their propulsion system (COM(2002) 567 final)