I use the IQ car mount thing for my iPhone and just installed it to my mini as well--
i rigged something to my current car using some epoxy and something in one of their kits, and I bring this with me when I travel
http://www.amazon.com/Smart-Solutio...&qid=1354514243&sr=8-30&keywords=Iq+car+mount
the tab is not obtrusive on the back of the phone and ipad cases, and what I rigged looks much cleaner than than those gigantic pep boys car phone mounts.
plus i can put those back-tab things on other stuff as i see fit. like now I can use the ipad as a GPS just by throwing a tab on the back of the case.
Used it today even. Have to admit its a little big for my tastes, coming from the iPhone
I'll try to post pics if I find time this week.