Fuel efficiency for all types of cars would nearly double if ____.
A) all cars were diesels
B) all cars used wind power
C) all cars had smaller engines
D) all cars were made from ultrastrong,ultralight composite materials
E) all cars were shared

Question

Quizplus · Accepted Answer

Using ultrastrong, ultralight composite materials in car manufacturing can significantly reduce the vehicle's weight, leading to improved fuel efficiency. This is because lighter vehicles require less energy to move, which directly contributes to better fuel economy.

Fuel Efficiency for All Types of Cars Would Nearly Double