I hear of such things....I suspect anything you do such as Keyless ignition will help...brake disc clamps that howl when the wheel turns...A determined thief will get what he wants I reckon, but you can slow them down and make them look for an easier mark. Storage in a garage is a good idea, but alas, I know not everyone has access to one. I bought the property i bought BECAUSE it had ample garage space....but true enough I needed to buy and quit renting, and I lucked out getting what I got.