Fortunately the United States government recognizes the seriousness of greenhouse emissions and the impact on global warming and is making progress in reducing gas emissions from vehicles. Travel growth has risen faster than the improvement improvements in energy efficiency but this doesn’t stop the United States government from promoting energy efficiency, use of renewable energy and trip reduction thru public and private programs. There has been significant development of fuel-efficient vehicles, researching options for cleaner fuel, programs implemented to reduce travel and even incentives for those people who modify or buy vehicle

Because the government and society have increased pressure, automakers have been faced with the challenge to build more fuel-efficient cares. All new vehicles must meet federal emission standards but the older the vehicle the more pollution it produces. Automakers must conform to the laws and have responding by producing different vehicles like an electric and hybrid cars. The human perception of electric cars is that they are impractical because they cannot go far or fast enough to fulfill their everyday commuting needs. A hybrid car, on the other hand, is a vehicle that powered by two or more sources. But like most concept cars, it is the public they have to convince that owning one of these will be comparable to what they own today.

I know understand that by choosing a cleaner fuel burning, fuel efficient vehicle, driving fewer miles and maintaining my vehicle properly I can have an impact on helping this country become environmentally cleaner.

· Emission recall which monitors the emission performance of vehicles on the road to assure that they continue to comply with the emission standards, Manufacturers must recall and fix (free of charge) those vehicles which do not comply.

· On-board diagnostics (OBD), which

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