Social Engineering Practice 0x02
whole series: #1
Consider this to be a pen&paper game.
You were busy moving out in the middle of the night because you had a plane to catch the next day and you underestimated the impact of stairs-only to your apartment in the fourth floor. You parked the transporter in front of your building. Unfortunately, it's a pedestrian zone where you can only park to load up stuff between 8 and 11am and a police patrol showed up.
You were a little pissed because there is literally nobody on the street and there is plenty of space to pass the transporter anyway so you don't really understand why you can't park here in the night for a few hours when it doesn't bother anyone—except the police's sense of law & order. But you stopped arguing quickly because you realized it's no use and it's only going to make the situation worse. You (currently) see no way to avoid the ticket so you ask to jump to the conclusion of how much it's going to cost: it's 55€. Not great, not terrible.
Since the name of a rental car company is on the transporter, the cop is so nice to offer you to send the ticket to your home address instead of to the company that would most likely add some processing fees to forward the ticket to you.
You thank him and think for a moment if you should come up with a fake name and address in the hope he won't verify it via ID card or have an excuse why that could just have been an accident if he does, but you don't think you're going to outsmart this cop right now. So you tell him that you're currently moving out, it's been a very long day, you're really tired, you tried to find a parking spot somewhere else but you couldn't, that you're almost done ... sorry, what was the question again?
Unfortunately, he remembered why he's here so you accept defeat and give him your new address and realize this new address wouldn't have been on the ID card anyway so you could possibly literally have said anything regarding it.
When you try to seem trustworthy by telling him in advance that your ID card is upstairs in the fourth floor and you would have to get it (it's even true), he tells you it's fine and he trusts you.

You think to yourself: "Damn, maybe I should have tried ..." but reply: "Makes sense, it's just 55€, it's not worth it to try anything stupid."
Since the cop remembers that you have been argumentative in the beginning, he mentions that if you don't agree with the ticket, you can just not pay it within the two weeks and show up to the court date in the ticket where you can plead your case in front of a judge. You thank him again for being so nice to you, apologize for earlier and ask for his name as if you're friends now.
After the whole ordeal, you remember that if a cop doesn't show up to the court date as the witness, the case is dismissed and you get to walk away free.
But how could you arrange that a cop won't show up to a court date (in a nonviolent way)?
edit: Forgot to make a bounty post out of this. It's again 5k sats for the most creative and plausible answer.