What can I do about unauthorized use?

Well, you could move or you could try being rich enough that you have enough clout that theyre YOUR dirty cops instead of someone elses...

Those are really the only 2 options

 

Can you elaborate on what happened?

 

Someone is hotwiring your rig and driving it ?
You need to install a GPS tracker immediately.
And maybe wire it in with a remote kill switch.
All the buy here pay here dirtbag car lots do this so they can shut the car off when the weekly payment isn’t made on time .

I’d put a tracker on it that alerts you when it’s moved , and I’d call the cops and report it stolen and stay on the phone with them giving them turn by turn directions to catch it .

You need a dash cam and
You also need a discreet camera or two inside , in the dash AC vents or something

dirty cops involved just means more
Money from the city when you sue them if you can catch them on video.

 

If it's just a trailer they're using, you can get a glad hand lock and also a kingpin lock. They'd have to bring some pretty serious equipment to get thru that.

Or it could also just be part of a gangstalking campaign, where somebody in your life is secretly harassing you while dropping "false flag" hints to make you suspect the government, as a way to enhance the "let's drive him crazy" factor.

 

Gladhand locks are easy to defeat and so are kingpin locks

2 wrenches and a spare gladhand or two
Or a drill, or even just a chisel and hammer

For kingpin lock, 2 or 3 pcs 4.5" slitting wheels and grinder along with crowbar

Or just slam it if its cast aluminum

But more realistically picking those locks is really easy

That said, locks just keep honest or only marginally dishonest people honest, so it might be worth the investment to see how bad these guys are

 

Being a former "shady" person. Give us some more info. I'm sure we will get you right.