Over the weekend I purchased a Nexus 7 2nd gen (2013) 32GB/wifi tablet at JB Hifi for $279 (price matched to Officeworks)
Also got a Steelie car mount kit for $39 (
http://www.niteize.com/product/Steelie- ... nt-Kit.asp) and a magnetic case/stand for $17 from JB.
And I bought a Kogan Bluetooth adaptor about 2 weeks ago for $19 on special (
http://www.kogan.com/au/buy/home-stereo ... oth-audio/) and a 12V cigarette --> USB adaptor for $5 a few months back.
Clearly mine isn't half as neat as an in-dash install and will require charging on occasion, but for $359 I have navigation, music, email, Torque, etc in my car, connected via Bluetooth (via AUX in from centre console) to the McIntosh system, and most importantly it's removable which means I can use the tablet elsewhere. I can play music and run the maps/nav at the same time - the voice guidance pauses the song playing and resumes after the announcement, which works well. The positioning of the tablet is higher than I'd like but mounting the base lower on the cubby lid may have prevented it from being opened.

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For anyone else who might be considering this, please note the following:
1. the ball bearing with 3M adhesive stuck to the air vent surround with ease (and can be removed with fishing line apparently without damaging the plastic), but the magnet came off straight away so I had to super glue it to the case; and
2. the Kogan BT device won't operate when on charge (which is via USB)

, however the battery life seems pretty good (reportedly "up to 6-9 hours, standby up to 150 hours") and it charges quickly (30 mins?)....although I reckon i've used it for 10+ hours without a charge. If there was a way to modify the internals so that charge mode doesn't turn it off it would be great.
3. some people think magnets will harm your tablet, but all the research I have done suggests magnetic fields don't affect flash memory (and bear in mind most cases are magnetic). And I believe this product has been around for a couple of years in the US (was originally a starter company before being bought by Nite Ize) so it would have been pulled from sale if it damaged devices.
I sort of rushed into this because I wanted it done quickly, but other solutions for a removable Nexus set up could be:
OPTION 12 or 4 x neodymium magnets glued to the back of the air vent surround and other 2 x 4 glued to the tablet case - similar to this:
http://www.subaruforester.org/vbulletin ... ll-157129/-or-
OPTION 2 (I haven't seen/tried this, but imagine it could work)
Kidigi (or similar) qi charging dock as the 2nd gen has built-in wireless charging:
http://www.gadgets4geeks.com.au/product ... xus-7-2013attached to a cubby mount baseplate:
http://www.cubbymounts.com/2005-2009.htmlI think this could work really well and the wireless charging would be great, but I don't know how secure it would be if the tablet is in a case and doesn't fit in snugly. Also may mean sacrificing the cubby and the dock might protrude too far and be in the way.
My aim for the future would be to modify a Qi dock to have folding sides and retract back into the cubby using a spring-loaded gearing/lock mechanism (such as those used in an adjustable phone mount) - that would be the ideal set up!
