Put a little more effort into clearing snow off of your car than just clearing the windows. It's added weight and drag and also very unsafe. Twelve inches of snow is equivalent to one inch of water. A one inch layer of water or ice weighs approximately five lb per square foot. So even a three or four inch layer of snow on your trunk, roof, and hood could be adding almost fifty pounds of extra weight. It is also much safer than letting it fall off on your drive. Large chunks can break off and strike other motorists and snow on your hood will just blow back onto your windshield.
by MeatFarley on September 28 2010
this tip works for 96% of voting Fuelly members.