Vehicle status: A new vehicle sort option

[Simons Mith]

This one's inspired by an FPI. I saw people talking about the difficulty of catching a crashed vehicle on a big map, if you overlooked the news article notifying you.

In the vehicle list you can already sort by name, age, reliability etc. - why not add 'Status' as a new option?
That could allow you to track whichever of Running, Loading, Unloading, Broken down, Crashed, Stopped, Stopped in Depot, Stationary, Stationary in Depot would be most useful.