As someone has said above, I believe this was more opportunistic than planned, if I was planning to break into someone's house and steel their car, I would be looking for something more expensive and desirable to take that risk, As much as its a horrible horrible thing to happen, they guys family where not harmed and he can buy another car, doesn't make it right, but makes it a lot more bearable.
If they really want something, they will find a way in the end, I remember a story years ago, maybe an urban myth, but when fireblades first came out, a guy parked it at the back of the garage, chained to the wall and put the car in after so it was wedged in, and went on holiday, they cut the chain with oxy acet, and actually dragged the bike over the top of the car, so he lost his bike, and the car was a right off as well, some people will stop at nothing.