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In that way, the development of these clean fuels is given a fair chance.
The company did not do so because it felt no pressure to create a cleaner fuel.
The program is designed to develop clean fuel technology and infrastructure for the long run.
We should use it as a foundation for building a truly effective clean fuels program.
The rockets used some kind of clean fuel: hydrogen, he'd been told.
The package of measures proposed tonight will give us cleaner fuel.
However, they're still trying to figure out how to use the cleanest fuel of all - the air we breathe.
Other states and municipalities also have their own requirements for cleaner fuel.
"I've also heard you can clean fuel injectors with it."
This is a clean fuel, converted from coal by a chemical process.
Environmentalists like the process for producing clean fuels from coal.
In fact, it could be the ultimate clean fuel.
Improvements to car standards and cleaner fuels are a necessity.
One key has been access to cheap, clean fuel.
Hydrogen is used as clean fuel for spaceships, and some cars.
Food is being elbowed out by pursuit of "clean fuel".
I believe these vehicles must be required to use clean fuel, too, if we want to cut particle emissions.
But government can make a difference in the economic pull toward clean fuels and the environmental push."
They know that it's not extreme but mainstream to champion cleaner fuels.
This is a very clear signal to the market that these cleaner fuels are actually being awaited.
However, I take issue with your characterization of hydrogen as "the cleanest fuel possible."
Tractors benefit just as much from this clean fuel, which means they produce less pollution.
Natural gas is the cleanest fuel of all for attacking air pollution problems.
He added: "Natural gas is an excellent clean fuel for transportation.
By 1997, one-quarter of new cars would operate on the cleaner fuels.