December is a month full of festive observances, but one of the most important often gets overlooked: National Impaired Driving Prevention Month! Between all the holiday merrymaking and the terrible road conditions, it's a pretty good time to think more carefully about our driving. But what if not everything you think you know about the rules of the road is accurate? We have Jeopardy!'s Ken Jennings behind the wheel all month to set you straight. Buckle up, check your blind spot, and pull away from the curb when it's safe and legal to do so.
The Debunker: Should You "Warm Up" Your Engine on a Cold Day?
In 2009, a study done at Vanderbilt University found that the average American believes that you should idle a car for more than five minutes on a wintry morning. I'm sure we can all picture some grumpy Midwestern dad heading out first thing to start up his car, and then shoveling the walk or finishing breakfast for fifteen minutes while his engine "warms up."