Thank you. Actually I've been lurking on the forum for a while now, it's a treasure trove of information here.
For the mount, I should have mentioned that I am in Europe. My Fiat van isn't listed in the RAM Mount website.
But that's okay, I think I might have another idea: in the van, above the windshield, there's a sort of overhead bin where one can stow maps, garage door remotes, keys etc... I could simply make a sort of oversized money clip thing that would let me hang the laptop upside down, just in front of the rear view mirror, then I could flip the display upside down and use a bluetooth keyboard/mouse combo such as
this one to control the laptop.
That would work great, and since I almost exclusively use the side rearview mirrors, I wouldn't miss the center one much. The diNovo Mini doesn't come cheap though. I'm trying to convince myself that it's worth blowing 159 euros because, quite frankly, at that price, I could get a standalone GPS device without all this hassle. But then, a standalone GPS device doesn't do wardriving too does it