All cars produce emissions as fossil fuel is burned and converted into energy. Unfortunately, like most other emissions, these usually end up in the atmosphere. With increasing use in cars, the damage to the environment is clear. Emissions mainly comprise of carbon monoxide, nitrogen oxides and hydrocarbons. The problems created by these emissions are numerous. They cause smog, acid rains, health problems and worst of all, they “allegedly” deplete the layer in the atmosphere that keeps us protected from the direct rays of the sun. Trace elements in fossil fuels have harmful effects..