Check your car’s wheels for a few seconds the next time you get in. Look around to see if you see anything that doesn’t seem right. Additionally, pay attention if you notice a water bottle wedged between the tire and the car’s frame. Perhaps the would-be thief is observing you. Pull out your phone, silently dial 911, tell the cops what’s going on and that you believe you could be in danger. Give your location and some car information.