Heoretical Framework

Heoretical Framework
A new wave of automobiles with diesel engines or hybrid propulsion is coming to the U.S. market, supported by environmental concerns, the high price of gasoline and the dependence on imported oil.

The U.S. market absorbs annually 17 million units. This year, hybrids will total around 87,000 units, and the consulting firm J.D. Power calculates that they will rise gradually until total between five and ten percent of the market by 2015. Despite its more expensive price, which is not compensated by lower gasoline consumption or some government subsidies, hybrids are popular in this country. High oil prices, estimates that, at the current consumption rate, this fuel reserves will be exhausted by 2050 and the fact that 740 million vehicles are responsible for 18% of global emissions of CO2 (carbon dioxide) that cause the greenhouse effect, are valid arguments to be against conventional cars that long bad smoke in the air , so the evolution of engines is not already an unreality.