Orangetj:
Crime Analysts for the City of Sacramento did a study of the areas where car thieves committed their crimes to see if the city could do anything to deter or prevent auto theft.
Their findings were quite illuminating. They found that, no matter WHAT they did--from puting additional patrols in those areas to lighting the areas with additional street lights--nothing stopped the criminals from participating in their favorite activity: stealing cars.
This is why I always keep my car not only locked but INSIDE my garage. Contrary to popular belief, not many car thieves carry saws around with them to cut the steering wheel from the steering wheel lock. Who cares about the door lock? Sure the determined thieves have no problem getting into locked cars, but the average joy-rider (or someone looking for quick and free transportation) is not going to bother trying to unlock your car door. They are going to check every driver's door to find one unlocked.
Here's an interesting news item. Today is Wednesday, and I always check out the Folsom Telegraph. On page A2, in the Police Blotter, there was listed there a vehicle theft were some woman left her purse in an UNLOCKED car parked on the street, and that purse was stolen. I wonder if that victim was surprised someone stole her purse since she probably left it in plain view in her unlocked car. I say she got what she asked for.

If she had hidden her purse and locked her doors, perhaps she would still have her purse, eh?
Just a thought.