 July, National Vehicle Theft Prevention Month. Maryland State Police are offering tips for motorists to keep their cars from being stolen. State Police say the primary cause for vehicle thefts are cars that are unlocked and those with left with a key or a fob inside the vehicle. Best ways to prevent vehicle theft, close and lock all windows and doors, use an anti-theft device, park in a well-lit area, never leave the area when your vehicle is running. It's 631 WCBM Sports next.