Cold weather has been blamed for a lot of bad economic data this year, including retailers’ weak sales. After all, it's easier to stay home and order everything online. But for shoppers who still make the effort to drive to stores, retailers are trying to make the process a little more rewarding. Sears has introduced a drive-through shopping option: if you buy something online and choose to pick it up at the store, you don't have to leave the warmth of your car. In five minutes or less, a store associate will bring your shopping cart out to you.