I was browsing through the data bindings and couldn't find any direct connections that would allow you to do this. Similarly, I don't see a way through scripting either, as we aren't given the relative location of the pit box in the first place.

Is this possible to achieve? Am I missing something within ATVO and/or scripting?

I have not looked in detail but I believe you get the location of your own pitbox in the data. But not the location of each car's pitbox, only your own afaik. Since this doesn't seem very interesting for a broadcasting context it is not included in the ATVO data. I could probably add it easily but is this really useful?

I was planning on adding this to an in-car package, so actually it might be useful for not missing your box. I'm not sure how difficult it is to add in, but it would be greatly appreciated!