I purchased a Griffin RoadTrip a few days ago and so far I’ve been _loving_ it. It works extremely well in my Toyota, and ‘ok’ in the BMW Z3 (it gets in the way of reverse and blocks the stereo controls).
So far it seems to be built very well and works great in every car I’ve tried it in (except for the BMW).
I’m not too worried about it not working in the BMW though – I plan on getting an Alpine 420i installed soon.