Sorry to hear about your bad experience.
We actually face the greater problem of the vast majority of people who support the state and its bad actions. If it weren't for that "someone else" who saw the car and ratted you out, your efforts to take care of the situation yourself would have been successful.
And, as you learned, cars are "kidnapped for ransom" and you must pay to have your own property returned. Too sad. Insult on top of injury...