I think I found a leak. Pretty cool I must say, the trailer works when you activate the parking brake. I couldn't find anybody saying a trailer was added to the Grand Marshal in the 0.5.1 changelog. I can see why, the trailer receiver and hitch don't exactly line up. If someone comes to me and says I must remove the leak:
I'm pretty sure that its not a leak, but a bug. It probably happened when they added the trailer for the H-Series.
Not a leak. Already fixed for the next update: http://www.beamng.com/threads/0-5-1...g-thread-read-1-post.18757/page-4#post-289719
When the normal cops can't get you, they call out this guy. And when this guy is out, you don't want to be in the area.
So apparently the Police force owns one of them Road Cruisers... As with all their vehicles, they push it a bit hard...