You did write nothing about vehicles and makers, but of some "institutions"... Maybe be a little more specific what you want to do I still don't understand it.
[i]after registering the user gets a list of this vehicles, selects one and views its gallery. thats what i meant.[/i]
First, "gallery" refers to the Zenphoto installation, you are talking about "albums". Besides that I probably not understand what you want to do it sounds like one album per vehicle.
In any case you might have some work to do, surely Zenphoto can't do everything for your special purpose out of the box (no CMS can).