§ Mr. Bennasked the Minister of Transport whether his attention has been drawn to the fact that lorries and omnibuses in Moscow are to be run on methane gas to prevent air pollution; and what progress is being made in experiments of this kind in the United Kingdom.
§ Mr. MarplesMy Department has for many years been aware of the theoretical potentialities of methane gas as an alternative motor fuel to petrol or diesel oil, but the quantities available in this country are so relatively small that experiments of the kind suggested by the hon. Member would not be justified.