I am the camera man for Amplified! the internet tv show with the guys over at SoundMan Car Audio in Santa Clarita, CA. They were the first to put an iPad in a Car, and just yesterday (8/11/12), we filmed putting a Nexus 7 in a car... my car.
Here is a picture, and a video. I love, it and it looks pretty cool. I wanted a simple install with no wires, as I just stream via bluetooth, and I don't see an issue where I would need to have it plugged in since it has great battery life. I have My Ford Touch in my 2011 Ford Edge, and I wanted to keep that screen but have the option to temporarily cover it with the Nexus 7 when I want more functionality in the vehicle.
They already sell iPad panel kits, and they will be adding this magnetic/removal kit as well. If you are in interested, you can contact them on FB for pricing.
https://www.facebook.com/SoundManCarAudio
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