Human-made air pollution comes from many things. Most air pollution made by humans today is because of transportation. Cars, for instance, make about 60% of the human-made air pollution. The gases inside car exhaust, like nitrogen oxide, make smog and acid rain.
The average price of a new car in America tops $33,000, according to car-buying site Kelley Blue Book, so buying a vehicle is a major financial move. While many consumers focus on sticker price or the monthly payment, that overlooks many other costs.
Porsche prices start at $46,475 and can go well over $200,000. Porsche models include several sports cars and a mid-size luxury SUV. Porsche car prices start at $46,475 for the Porsche Boxster, the entry-level Porsche sports car.