For the Mount:
I bought a 200W Car 12V to 110V Power Inverter with USB Power Port and Fan built-in (http://www.dealextreme.com/p/200w-ca...wer-port-37255
), and mounted it under dash near glove. then bought iGrip Flexible Mount for Samsung Galaxy Tab 10.1(http://store.androidandme.com/igrip-.../3A96A1747.htm
With the mount I put to the right of my glove box and Used
bolts instead of stupid suction, to fasten on to the dash, then cut the prongs off the front and used a strong model adesive glue and mounted Galaxy Tab™ 10.1 Multi-Media Dock on the flat surface. I really wish I had pics, i cannot go to the shop and take any at the moment so when they finish with the motor,**hopefully soon** i will post pics. It took some serious customization to do it and i couldve just used a four prong hooked mount but it doesnt look as clean as what i ended up doing, and all i do it sit the tablet in the dock no plugging in anything. oh and the reason i put the power Inverter instead of just using an extra car lighter outlet is cause i used the stock power "booster" ac plug that came with the tablet and glued it up along the mount and plugged it into the Dock and inverter.
As far as what i use it for, currently it only plays audio files over bluetooth, to my sony bluetooth headunit which is connected to my amp, sub and speakers. im waiting for an app that will allow me to control the volume settings from the tablet.