A rather under exposed, Kodachrome Instamatic slide of what looks like a VW Golf car. I'm not a car expert, so it could be another model, but this looks to me like a 1970s or possibly 1980s version of that car.
The registration plate shows that the picture was not taken in the UK, but again, I'm not a car expert so I don't know the country of origin - if anyone would like to supply that info please let me know in the comments.