I caught something on the radio news a few days ago.
I think they said 50 cars had been stolen in this area during the recent cold weather as people left the engines running while they went back inside their houses.
There was then another news item about three cars being stolen in the same way in one day.
Get a bicycle cable lock.
Wrap it round the steering wheel and the door handle, seat frame or something.
It's not ideal, and probably not endorsed by the police or insurance companies, but it's better than nothing.

