yesterday are opening two hours late this morning. and d.c. is bracing for another blast of bitter cold air with temperatures dipping into single digits. and that same storm turned into a traffic nightmare for drivers across texas. thousands of them stuck on slick highways. the biggest backup formed south of dallas, a line of cars and trucks stretching 30 miles. some families with kids in tow were stranded for hours. >> weather like this has been tough on car sales and has automakers hoping for a big spring break. six companies reported declines in february. some offered steep discounts to lure customers in. but subaru was up 24%. on four-wheel drives and suvs. a big selling point in all this snow. apple's carplay might be an option. integrating your iphone with your car's entertainment system. using familiar buttons on your dashboard or siri for hands-free control.