The picture below depict pollution statistic for the United States. Deep red being the most polluted.
The picture below is an area at night and at day. It helps to show how much pollution there really is.
Many hybrid cars are being developed in order to improve air quality.
| Manufacturer | Model | Model Year |
| Ford | Escape | 2004 |
| Explorer | 2005+ | |
| General Motors | Saturn SUV | 2004 |
| Chevy Pickup | 2004 | |
| Chevy Suburban | 2005 | |
| Daimler-Crysler | Dodge Ram Pickup | 2005 |
| Mercedes S-class | 2006 |
| Car | Picture | Description |
| Honda Civic Hybrid |  |
650 miles on a tank |
| Honda Insight |  |
61 mpg ; under 20 grand |
| Toyota Prius |  |
52 mpg |
| Rinspeed Advantage |  |
Runs on compost. |
| Ford Prodigy |  |
70 mpg |
| GM Precept |  |
Fuel-cell with 100 mpg |
