I just received this car holder for my 101, so that I can let my little daughter watch video (and have her stay quiet). http://www.amazon.com/Vogels-EMC5000-He ... B000NOQDOA
Fits quite well and make a good & solid impression. I'll try to test it "live" next week.
The only small minus point is that you have to saerch a bit the right position the first time so that it doesn't press on power or volume, or hide usb/sound port if needed (I plug the hearphones output to my car soud system.)
Note that 10" could be a bit too big for small cars. I think that teh Archos 70 should also fit well in it (haven't checked the dimensions)