New vehicles would be cheaper — and heavier — if they don’t have to meet more stringent fuel requirements and more people would buy them, the draft says, and that would put more drivers in safer, newer vehicles that pollute less.

New vehicles would be cheaper — and heavier — if they don’t have to meet more stringent fuel requirements and more people would buy them, the draft says, and that would put more drivers in safer, newer vehicles that pollute less.