A hybrid electric vehicle is a type of vehicle which combines a conventional internal combustion engine with an electric motor. The presence of the electric powertrain is intended to achieve either better fuel economy than a conventional diesel powered vehicle, or better performance. A variety of types of HEV exist, and the degree to which they function as EVs varies as well. The most common form of HEV is the hybrid electric car, although hybrid electric trucks (pickups and tractors) and buses also exist. There are also hybrid vehicles which make use Compressed Natural Gas (CNG) as well.

Hybrid vehicles release less emissions into the air and thus reduce the amount of PM2.5 emitted into the air, thus improving air quality. We should advocate the use of such vehicles even though it is expensive as the price will eventually drop in the future as fossil fuels become increasingly scarce.

Encouraging smokers to kick the habit is the only sure way of reducing cigarette smoke since it is largely an addiction problem.


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