It would be good if we could develop an 'open-source' motorised VGA in-dash housing forged from one of these cheapo composite-only units married with a Xenarc/Lilliput.
I share the opinion that getting the motors going again using a microcontroller would be achievable after stripping the original guts out of the housing. I don't think we should get too hung-up on this problem being a deal-breaker.
The only remaining big question for me would be as to whether it's possible to fit Lilliput/Xenarc controller boards into the chosen motorised housing.
I'm in the UK and have noticed a few of these suspiciously low-priced in-dash motorised LCDs on ebay...
ebay link 1
ebay link 2
ebay link 3
All three of these look cosmetically different from the 7" motorised unit sold by mp3playerstore. It'd be interesting to see how many motorised in-dash variants are floating around at the moment.
I certainly want this problem solving enough to put my money where my mouth is and get one of these things to experiment with.