Here's a tip that can easily help reduce pollution from cars and save you gas money: don't use drive-thrus at restaurants, banks, liquor stores, or any other type of business. Yeah, a drive thru may be slightly more convenient. But think of all the gas that gets wasted for all the cars sitting in drive thrus, and all the pollution this creates. If you are looking for an easy way to do your part, skip the drive throu and go in instead.