If a profesional thief wants your car, not having the vin on line really won't slow them down. All they would need is a new ignition and a slide hammer. Unclip the plugin on the old, plug in the new lock & key and use the slide hammer to break the old lock.Then drive away.
Lets face it, even tho we would like to think of them as very valuable, most of our cars aren't and if you take some basic precautions no one is going to drive away with one.
1) Don't leave the keys in them.
2) Don't leave the keys on a nice pegboard next to the door with tags on the rings for each car.
3) Lock the doors...this goes for the car, garage and house.
4) Better than an alarm system, get to know your neibours. Especially the little old lady across the street. Give them your phone number. If they see something wierd have them call you and no answer, call the police.
5) Hidden ignition switch (on/off type) under dash.
6) Battery disconnect switch on battery.
7) Bury your car under 4' of snow 6 months of the year (optional)
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