I have an ASUS TF300T tablet which has both Google Music and Amazon Prime Music installed, with several albums downloaded. I have no problem playing from either app to headphones, computer speakers, or my home stereo system. I can play to portable speakers in a vehicle without any problem. However, when I am using output to the car system in my wife's VW Passat, or to an FM transmitter in my old pickup truck, I get occasional random restarts of the tablet. It does it in both Google Music and Amazon. It seems to not matter what I am playing. I have tried turning down the device volume, switching off the wi-fi, etc. Doesn't seem to be related to vibration of the vehicle. The only commonality I can find is that it happens when the sound is coming out of the car speakers. It's not a deal killer, per se, but it's beginning to irritate. I've googled but did not find anything resembling this problem so I thought I'd toss the idea out there. The unit is about 4 years old, but otherwise works great, and has done this since very early on. Anyone seen this behavior or might have an idea what is causing it?