It is likely therefore that natural gas-powered vehicles will be increasingly cheaper to run relative to gasoline powered vehicles.

About half the 8,000 natural gas-powered vehicles here are privately owned cars.

Detroit has also offered to build for everyone the same low-emission gas-powered vehicles it now builds for California.

The popularity of the steamer began to wane after Cadillac developed the self-starter for its gas-powered vehicles in 1912.

These gas-powered vehicles really pertain to the individual who is more interested in scale than imagination.

Are electric and hybrid cars safer than gas-powered vehicles in an emergency situation?

Both types of vehicles create fewer pollutants than gas-powered vehicles.

Early railway systems and gas-powered vehicles were bumpy, uncomfortable and inefficient.

For the purpose of the pilot program, five similar gas-powered vehicles were chosen as a control.

The company started as a manufacturer of steam-powered cars, but later switched to gas-powered vehicles.