| 17 August 2010

Photo: GM Don't Let More Air In Than You Need The more "slippery" a vehicle is through the air, the more fuel efficient it will be at highway speed. Air friction is a big deal when you move fast, so anything to reduce it can make a difference. The biggest factor is of course the overall shape of the vehicle, but there are all kinds of other tricks to lower the drag coefficient. One of those tricks is to have a variable geometry air shutter at the front of the vehicle, something that the Chevy Cruze Eco will have. By changing the size of the air inlet, this system can either make the car more aerodynami... Read the full story on TreeHugger