<prompt> Human: Hi all, long-time reader and first-time poster in this sub. Hoping you all could help me out here.My fiscally irresponsible brother-in-law sold his car in cash to a private buyer who never returned the plates, I assisted him with the process and feel partially responsible for this situation and could use some suggestions.The story: i live in Florida, and the car was a beat up old Acura that was next to worthless, power steering was completely destroyed, transmission was on its way out, and had major body and interior damage. The tires were bald and he is unemployed, so I encouraged him to sell it before they blew and he had no money to fix or tow it to the junk yard.We listed it on OfferUp, CL, and FB marketplace at 500 OBO. Aside from initial inquiries, it took weeks until someone from OfferUp actually came to see it cash in hand. We settled at 300, got the cash and were about to sign over the title. Then the guys said they needed to leave the plates on it to bring it home. This worried me, but I really wanted to get this piece of junk out of my driveway and this would probably be the only buyer we would get. It was a kid and his father, they seemed reasonable to we trusted them to mail the plates.Fast forward a couple weeks, still no plates. To make matters worse, OfferUp erases the listing and messages once the items are sold. AND my brother-in-law erased all the text messages in his phone so does not have their contact info. I just got a notice from the toll agency that the plates are still on the car racking up tolls so I know it is being driven.At this point- what options do we have? Should we call the police? We removed insurance but I am worried he could still be liable if something happens. I am not happy with these guys at all, wouldnt even mind calling it in stolen.PS- I know it was foolish to sell the car and leave the plates on, no need to remind me as I have been feeling bad about it ever since. In hindsight I should have taken a picture of their ID for my records as well.Thanks in advance for your help!  <response>: If you turned in the transfer of title. Its their issue. If they get caught it will be driving without tags. 