Answer:
Automobile makers in US should required by law to make all their vehicles fuel efficient even though the vehicles may become more expensive is a TRUE statement.
Step-by-step explanation:
1. Automobile industry in the US has set a high standard for fuel efficiency for the vehicles manufactured. This is the result of the law which is enforced to promote fuel conservation and decrease dependence on import of oil.
2. The automobile makers are now more focussed on developing electrically-driven vehicles as electricity is viewed as the best alternative fuel for the vehicles.
3. The electric vehicles might cost more than traditional fuel vehicles but the overall cost of the fuel and its maintenance is considerably reduced.