Severe weather is already impacting many people's Thanksgiving travel plans, with heavy snow blanketing huge chunks of America, and a bomb cyclone threatening the West Coast. So how can you stay safe while driving in snowy, cold weather? Know your car's dashboard, experts advise. Then, a couple of surprising hacks can help defrost your windshield and unlock your car. Rubbing an onion on your windshield can help, and using hand sanitizer on your cars locks can get them working again.