环境保护：地球日当天华盛顿呼吁使用低耗油车
On this Earth Day, Washington is calling for more fuel-efficient cars and trucks. The standards would require new vehicles to average 31.6 miles per gallon by the year 2015. A new energy law calls for the fleet wide average of new cars and trucks to reach 35 miles per gallon by the year 2020. The current rule calls for 27.5 miles per gallon for cars. SUVs, pickup trucks and vans need to get 22.5 miles per gallon. Transportation Secretary Mary Peters announced this proposal which is expected to be finalized before President Bush leaves office.