You don't know much about the law, do you? In Texas you can legally shoot a person who is breaking into your parked car while you are standing on the porch of your house.
So you're a lawyer familiar with Texas law then. Good, please explain:
"SUBCHAPTER D. PROTECTION OF PROPERTY
Sec. 9.41. PROTECTION OF ONE'S OWN PROPERTY.
(a) A person in lawful possession of land or tangible, movable property is justified in using force against another when and to the degree the actor reasonably believes the force is immediately necessary to prevent or terminate the other's trespass on the land or unlawful interference with the property.
(b) A person unlawfully dispossessed of land or tangible, movable property by another is justified in using force against the other when and to the degree the actor reasonably believes the force is immediately necessary to reenter the land or recover the property if the actor uses the force immediately or in fresh pursuit after the dispossession and:
(1) the actor reasonably believes the other had no claim of right when he dispossessed the actor; or
(2) the other accomplished the dispossession by using force, threat, or fraud against the actor."
The deadly force section below it refers back to this one. It reads like you have to be convinced the only way to save your car is to shoot the guy. How can that be if you never call out or anything? You'd have to articulate a good reason why you believe he would have taken the vehicle regardless. I would not want to take that gamble.