Engines, gasoline, and emissions. All of these terms have to do with automobiles since their invention and introduction to the public. It has undoubtedly been one of the biggest contributors to the overall global economy. Sadly, it has also become one of the biggest burdens to our current society and one of the biggest contributors to the degeneration of our environment. The list of emissions from most modern vehicles includes known harmful chemicals and toxins such as carbon monoxide, sulfur oxide, hydrocarbons, etc. All of these chemicals have been proven to contribute to the level of overall carbon emissions, specifically contributing about 28 percent of all green house emissions (figure 1).
Figure 1
This increasing problem has not only taken a environmental toll but an economical one as well. Entire cities have been enveloped with smog, a mixture of toxic gasses caused by the level of carbon emissions, especially industrially developed countries (Figure 2). This has affected overall production, sales and efficiency of factories due to the level of control that the government is now implementing on automobile emissions. Some automobile companies have welcomed this change and have embraced it as an opportunity to contribute to a lower carbon emission index from our vehicles. Thankfully Toyota, one of the biggest manufactures of cars, has taken on this challenge. Toyota has decided to be one of the pioneers of what now many are calling a Hybrid automobiles revolution. Researching and developing these new types of cars has became a priority for Toyota during the beginning of 1993 knowing that a lower emission rate would sooner or later become a requirement worldwide. Concerns of the future of the automobile industry rose. With this knowledge Toyota marketed