Image having someone walk up to you while you are sitting in your car obeying a traffic signal, thrusting a gun in your face, and taking your car from you. Or having your vehicle stolen while you are parked, (even in your own driveway), or getting gas. This is the new crime called carjacking.
It can happen anywhere, not just in traditional "high crime" neighborhoods, and it is just as likely to occur during the daylight as it is after dark.
If your are bumped by another car, look around before getting out, or do not get out. Look to see who is in the vehicle that rear-ended you. If the person approaches your vehicle, only roll your window down enough to exchange information. If the situation makes you uneasy, memorize or jot down the vehicle's license number and description. Signal the other car to follow you. Drive to the nearest police station or to a busy, well-lit area. If you do get out of your car, take your keys and purse or wallet with you and stay alert.