Here's a really scary story my client just told me yesterday. She was leaving work and getting into her car in the parking garage. Another lady who she didn't know was leaving at the same time. My client is a little more cautious than most and keeps her eyes open all the time. After the other lady got into her car, my client saw a guy's head pop up from the back seat of the other lady's car and duck back down several times. He was careful to keep himself directly behind the driver's seat and headrest.
The lady drove off oblivious to my client's attempts to get her attention. So my client followed her honking her horn. That lady had no clue, she just kept on going. My client followed her for about 20-30 minutes until the lady got home. All the constant honking attracted a lot of attention when the lady pulled over. So family members came out of the house. When she fully stopped her car, the guy bolted out of there and took off. I was telling my client that she probably saved that lady's life.
ALWAYS take a peek in the back seat area before you get into your car!!