You can post it on YouTube but you need to anonymize the footage. No plates and any identifying information which can be quite tricky. For example if you post a

You can post it on YouTube but you need to anonymize the footage. No plates and any identifying information which can be quite tricky. For example if you post a video of a rare car of which maybe 1 person owns one would count as identifiable. I believe in certain extreme cases some courts in Switzerland did permit such footage in court.