>I'd rather have some sort of standardized modular system where I can put my own tablet-sized computer in an appropriate place and have it get power, audio sync

>I'd rather have some sort of standardized modular system where I can put my own tablet-sized computer in an appropriate place and have it get power, audio sync with the car's speakers I did pretty much this in my car, and it was surprisingly easy. ~7 inch tablets are just about the same size as Double DIN radios, so a little but of modification to the mounting bracket, some wiring, and a used Nexus 7 I picked up on ebay got me this: http://paste.click/RILfPr http://paste.click/RILfPr It's hooked into the car's speakers via a USB dac and a small amp, and pulls sensor data from the OBDII port with a cheap bluetooth scantool, but otherwise is completely independent of the car's systems. Turns on and off instantly with the car's power thanks to Timur's Kernel (super low power standby really, but the battery drains isn't much different than having it completely off). I also attached a wireless remote via OTG so I don't have to mess with the touchscreen for simple things like volume and media controls while driving. So it's definitely a viable option. I'm surprised no one has come out with a standardized D-DIN to <popular tablet> bracket yet.