Clean Air Cab is a carbon neutral taxicab service based in Mesa, Arizona. The eco-friendly transportation company operates a fleet of 26 Toyota Prius, which is one of the most fuel-efficient hybrid autos on the market. In addition to the substantial reduction of carbon emissions and improved mileage, the company purchases carbon offsets and supports global aforestation. The taxis accommodate one to four passengers and are available throughout the week. The cab operating firm provides Phoenix airport service for drop-off purposes.