Car accident. Never Do This After a Car Accident, DIY and car repair with Scotty Kilmer. What to do after a car accident. How to deal with a car crash. What to do after a car accident that's not your fault. Traffic collisions can be a stressful time, but don't make it worse by doing these things. Auto accident dos and don'ts. Things not to do after a car collision. Car Advice. DIY car repair with Scotty Kilmer, an auto mechanic for the last 50 years.