348 Courtesy Hook?

I may embarrass myself by asking... but what in the world are the two rubber hooks next to the visors? Looked at an exploded diagram then found one on ebay and its listed as courtesy roof seat belt hook. Seat belt hooks, on the roof? I'm sure this is going to be an obvious answer and I'll kick myself for posting, so please take it easy on me

 

Hang sun glasses through?

 

That's what I originally thought, until I saw set belt hook.

 

I assumed those with mouse belts, when unclipped you can hook the belt on there for some reason that is unclear to me. Maybe easier than reaching back.

 

Yes, for the mad mouse belts.

 

That must be it, but it just struck me as odd. They are Italian cars; )