text: By allowing students to design their own projects, students are less restricted by guidelines and are thus further enabled to develop their creative and organizational skills. Students are also able to learn about subjects that they already find interesting and worthy of further research, and will therefore be more enthusiastic about the assignment.                        The thought of limting car usage may sound ridiculous or even out right absurd to some, however, what if one car not driving could save your city or even country? Emissions from cars have been weathering away at the Earth's atmosphere and trapping health threatening green house gasses. Goverments have taken notice of this and are developing programs to curve the increasingly large amount of emissions and other air pollutants that come from cars.