Yes, it's a tough lesson to learn. After living in Chicago and Atlanta, I do not keep anything visible in my car. If it's of any value I will put it in the trunk. If I'm coming from a shoot, I will either back image up on an external drive and/or put the cards in my pocket for safekeeping. My friends know that I leave nothing visible and give no reason for a thief to break into my car. Hell, a homeless person will break into your car if there's loose change or a piece of clothing visible. Why take the chance?