Remember to place these documents in some type of protective casing to avoid damage. If you leave your vehicle at a parking garage, only give the ignition key to the attendant. It is foolish to give your trunk and house key to a stranger. The same suggestion holds true for automobile repair service persons, valet service, etc. They also look for valuable items left inside the car in plain view.
Radar detectors are a prime target.
It is not uncommon for such a burglary to take less than fifteen seconds. Do not invite an auto burglar by leaving valuable items in plain view. Cellular phones, compact disc players, stereo equipment, radar detectors and other auto accessories are prime targets of auto burglars. Remove or conceal these items so they offer less of a temptation to the opportunistic thief. Record any permanent serial numbers which appear on auto accessories.