Locked garage is the best place to put it. If it can't be in a garage park it as close to ou house or garage as you can. Even park a car behind it so that they have to do even more work to steal your car.
The odds are anyone that is not just a random OMG I am going to steal your car type of theif is going to know more then you want them to about your car, and maybe even you. They proabably have looked at your car before(in your driveway, at a parking lot, events...) The obivious methods like a removeable steering wheel, alarm system and all that are strong methods to prevent theft. Its the little things you do that makes the car either hard to start, move, or get into that count. These are the things that a thief will not see coming.
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