The lighter isnt sturdy and tight fitting enough to support the weight. I tried to plug my gf's pod RoadTrip into the lighter and the lighter swiveled like it was going to pop out the interior trim.
How about the vent clip one? Do you think that one'll hold securely?
I dont know about that vent clip one, even the cup holders that held on to the side vents would knock the blades off alignment. I dont really know what there is that really works for the boxster.
The center vents would move too much, if you hit a bump i could imagine the blackberry bouncing off the your AC display over every bump.