I've been following the BGE development. It's pretty nifty. And I was certainly impressed with the custom mount. The Forester even has a sunglasses drop-down pocket in the center over the windshield, that would be perfect for doing what Tony did -- if I had a display extender (and I could convince SWMBO that I should tear apart a brand new vehicle).

JBjorgen's mock-up is pretty close to what I was thinking. But... the section he has it is actually where the 12v/lighter outlet is, and is only a few inches deep -- that would take some pretty massive cutting. Right underneath that, though, right behind the switches for the in-seat heaters, is a deeper map pocket. I don't think it's wide enough -- I'll get out and measure it tomorrow.

The stock headunit allows a variety of inputs -- via USB, aux-in, or BT. Initial research suggests is the same (or similar) headunit as what's in Honda -- manufactured by Clarion. So the BT might work just fine.