The return of wierd huh.

In a car park near where i live there is a sign painted on the floor saying and i quote
"DO NOT PARK
HOLLOW VOID"
now for a start this is strange because what the hell is a hollow void and secondly it is wierd because gramatically speaking it could be saying either do not park here because it is a hollow void or do not park here if you are hollow void i suspect however that it is something to do with cars having enougth room to drive out of their parking position however when one consideres A] that this is not being done in any other part of the car park, and B] that i have noticed it being done in any other car park that i,ve been, the theory falls somewhat flat however it could be rescued if one were to say that it was painted by the cartaker of the swimming pool that backs out onto the car park so that he or she can get out when they want to and that they don't care about anyone else with regards towards that or they do not have the authority to paint that anywhere else in the car park.