When my brother's car was stolen from Holmesglen station a few years ago, it was found five weeks later in Southland car park. It had been parked there for many weeks. It might be worth an early morning drive through the local shopping centres. It's easy to leave a car there without being noticed.
Now... about that steering wheel lock (Club Lock type). Did you have one fitted? Asking because I often park at railway stations. Hope you have better experiences with busses than I did.
Here's hoping the car turns up soon.
JH
(Oh, they found an envelope in my brother's car, got his address, figured no one was home and robbed his house!)