They may not be abandoned. That is just what the poster of the video said. But then he regularly posts this kind of video after gaining access to private gardens and yards by whatever means. He is trespassing and some collections have been stripped of parts and trim after he has posted the location. Yes we may think it a shame but do you know the owners real intentions. I could post similar shots of cars outside under sheets etc, The better stuff is inside though.
Sometimes I think laterally, but then I have to get up!
Where I live (Wrexham, north Wales) there are a lot of abandoned cars that not many people know about. A while back I found a Jensen Interceptor MK3 which had been abandoned for 35years. A couple of weeks ago I found a Sunbeam Rapier fastback which is almost complete. The interior is in amazing condition despite the fact that the car had done around 97k. There is also a Hillman superminx but that is holding the roof of the collapsed barn.