Three. If there is another it's covered in snow, and therefore I can't see it. If there's another one that isn't covered in snow, it must be invisible, and hence, answering the original question, I can't see it, so three again!
I see at least 3 partly exposed vehicles and either a mound of snow where the plow couldn't do the corner or else another vehicle camoflaged by a very poor paint/snow job.
Tis a 3-series BMW, not even a year old. Remember children if you're rude to Uncle Ozzy and he is having a quiet afternoon he'll come round with his colleagues and bury your car! Steve at work found this out this afternoon Boredom is a terrible thing... especially when snow is available!
There are two types of aeroplane, Spitfires and everything else that wishes it was a Spitfire!