The book identifies using a fuel-efficient car and driving less as the number one way most people can reduce their environmental impact.

There are several new fuel-efficient cars in the market today.

A commonly studied example is that of a more fuel-efficient car.

The technology to make a more fuel-efficient car is no secret.

These vehicles are some of the most fuel-efficient and affordable cars on the market.

The end result is a more fuel-efficient car that can also lower your home's energy bill.

It essentially came about in response to the 1973 oil crisis and the need to produce more fuel-efficient cars.

But they certainly realized that a more fuel-efficient car might be one way to succeed in a competitive market.

But all that changed when the energy crisis in the mid-1970's put a premium on light, fuel-efficient cars from Japan.

The groups expect that a new standard will allow bigger, less fuel-efficient cars.