Most vehicles come with at least two cupholders and some have a dozen or more. So it’s a safe bet that at least some — or all — have some sticky, gooey and possibly smelly drink residue inside. The simple solution is to drop in a set of removable CarCoasters from WeatherTech. Made from a soft, rubber-like material, they can be removed for quick and easy cleaning, which is especially handy in the winter when freezing temps impede proper care. Each package of CarCoasters contains two that are 3 7/16 inches in diameter. and two that are 3 1/8 inches. Purchase for $10 a set from www.weathertech.com.