Yahoo has launched their Auto Green Center that ranks cars 1 – 100 on various green factors such as pollutants emitted, fuel usage and manufacturing environmental cost. You can also search for cars on the type of fuel they use, such as hybrid electric, ethanol, biodisel or natural gas.
The Zenn Motor company has launched the Zero Emission No Noise car that runs entirely on electricity. For around $12,500 (Â£6,250) the car will take you 30-40 miles (50-65 km) on one charge that costs about $0.50 (Â£0.25).
The electric powered Tesla Roadster can reach 130mph but only costs $0.01 per mile (Â£0.05 per 1.6km) and will take you 250 miles (400km) on one charge.
Ecoigo is an evironmentally friendly car service that use Toyota Prius vehicles and offset the electric usage with Ecotricity. Evo Limo in the US, or Eco Limo in Australia both provide similar services with different forms of energy for their vehicles.