No Cuts in Use of Gasoline Sought In New U.S. Conservation Proposal
Energy Department issues gasoline conservation plan that sets consumption target for 1st quarter of '80 at 6.8 million bbls a day, no lower than what analysts expect it would be without plan; consumption targets for some states, including NY, NJ and California, appear to be higher than their present gasoline consumption; Gov Richard Lamm, speaking for National Governors Assn, scores plan; comments by Energy Sec Charles Duncan and Deputy Sec John Sawhill (M)