Gas producer units for public service vehicles are in production and are being allocated as they become available to selected public service vehicle undertakings. Plans for the production of units for goods vehicles are well advanced and deliveries on a quantity pro- duction basis are expected early in the new year. The fuel used will be almost entirely anthracite of a defined specification, but the possibility of using a wider range of fuels is under continuous review. My hon. Friend will be glad to know that on 30th October, 1942, there were on the roads of this country 1,383 vehicles operating on producer gas.