What is the chance?, Could be a 6... Options

[PlantMan]

This car has been around for several years at this specific location. I think I first saw this car 5 years ago but at the time I did not pay much attention to it other than seeing it parked in this lot. It is located within a storage parking area of an upscale neighborhood near me and I saw it today for the first time in probably a year. It has been moved from another parked location within the lot but I have not witnessed anyone actually driving it. I took this single photo from my phone which would explain the quality. It is located on private property so getting up close will be a challenge unless I want to trespass which I am not willing to do at the moment. I will try to get a few additional pics next time I am by the lot. I can only assume that the person who owns it knows what they have and would not be willing to part with it given the neighborhood in which it is located.
A few more pics/vin would be helpful I know. It would just be easier to ask a local in the area but I hardly see any people within the lot.
California blue plates and looks like a 70/71.