(and as I'm writing this, I'm starting to think "there aren't enough new users to make any of this worth while")
New users of car-players? No, there aren't, not by a mile, but every other Rio product is going to have to solve these problems too, so any input from car-player users (particularly "less geeky" ones, though I guess they wouldn't be hanging around in internet forums anyway) would certainly not go to waste...

Peter