Ok ... some of you are going to tell me to get a grip, but anyway ...
We live in a house with a block paved frontage providing generous and adequate parking, for three cars side by side, or four if we close up a bit. Our next door neighbour has a similar amount of space, and the two drive ways are open to each other. The only thing which indicates the boundary is a change in the block paved surface: no fence or anything. Both households own two cars.
In spite of having generous amounts of space, our neighbour insists on parking his vehicle (a large 4x4) within inches of the boundary. So close, in fact that he can't open his car door without it overhanging our drive and he can't get out of his car without his feet actually landing on our drive as he does so.
The other day, OH actually watched him drive up, back in, then pull out again and move closer to the boundary!!!! Even though there was acres of spare space between him and his wife's car which was already on the drive. Needless to say OH is getting pretty fed up, but in every other respect the people are lovely neighbours. Would you say something or just put up with the guy's behaviour.