How do I make a mesh deformation script deform only in one deriction?

Hi! I usually never have luck with unity answers but I hope I can get an answer this time!

I want to deform a car mesh but only if the deformation that is about to happen deforms towards the car pivot. Its quite simple and it probably goes kind of like that: if mesh is about to deform at a angle away from pivot then, do nothing. BUT if it is about to deform towards the pivot then deform it. I hope its understandable and I can supply the script if needed.

Thanks in advance -Tilen :)