My dad got dinged in ~$170 in impound fees because the guy who bought our old SSE parked it somewhere he shouldn't have and the car got towed. In Ontario, a signed transfer of ownership doesn't cut it, it'* defined by whomever is still the actual registered owner regardless of any signed paperwork.
I sold a POS Cavalier to someone who never registered it, left it abandoned on the side of the highway, and 2 months later, I get a letter asking for hundreds of dollars for towing and storage fees. Thankfully, I had the bill of sales and all I had to do was sign it over to the impound yard so that they could junk it. Legally they couldnt with me listed as the owner. All fees were waived. Whew!!