im not concerned with power. This thing has great battery life. My design will allow it to either snap or slide into place so I can easily remove the tablet from the holder. From my research I can not stream bluetooth audio to my car so I will need to hook up the audio out to the aux input of my radio. Hopefully I can splice in behind the scenes so I don't have wires exposed out front. I am really dissapointed that the car cannot stream bluetooth audio
