how could they possibly steal it? do you use push button start or do you use a regular key?
All vehicles can be stolen; the cat and mouse game between thieves and technology just means newer rides require more sophistication.
In a way, we still need to make cars "stealable"; otherwise, if the only way to jack someone's ride is to have the owner in the vehicle, then they'll just put a gun in your loved one's face.
I'm sure some on this forum might relish the opportunity to draw down on a thief but it's different when you think of an "unstealable" car endangering your family.