Does a +1 or Share appear in SERPs site-wide, or only for the page that is specifically shared?

[kpclaypool]

Take the example Danny Sullivan posted:

http://searchengineland.com/how-being-friends-on-google-leads-to-better-rankings-87376

In this case, Ford shared www.ford.com, and its friends and followers see that in the SERPs. Hoever, how does that compare with, say, sharing http://www.ford.com/cars/mustang/? Does the entire domain reap the benefit, or just that page? Would people see a "Ford shared this" beneath a search result pointing to ford.com (the home page), even if Ford had only shared this specific interior page?

Or is it too soon to know for sure how this is all going to work?

[RyanKent]

Presently Google +1 indication in SERPs only works for the page shared.

[Arnx]

I think in the future it will affect your general domain ranking a little bit (Seems like a logical step for google?). But just as Ryan says presently it doesn't seem to affect it.