We still have used fuel sitting all over the place.

More modern technology would use less fuel to do the same work.

Even more important than the grill is the fuel used.

This was done so that the plane would use less fuel.

All the fuel used during the night has been restored.

They used fossil fuels and even had their own dark age of a sort.

Boeing also plans to use alternative fuel on the 747.

Many countries are using more diesel fuel for a variety of reasons.

What did was the absurdity of using as much fuel.

By 2007, the plan calls for all vehicles to use such alternative fuels.