Interesting update: with no headphones plugged in, the skipping does not occur. I started a playlist through the built in speakers and after a very fast drive it was on track to the second.
I'm guessing the magnetic field generated by the alternator is causing induction feedback in the headphone wires. Otherwise I'm stumped.
Sent from my HTC One using XDA Premium 4 mobile app
Current Phone: HTC One (m8)
* Unlocked, Unlocked Bootloader, S-Off, Rooted
* Android Revolution HD, Sense 6 ROM
* Harmon Kardon Audio enabed
* Wireless Charger installed.
Current Tablet: Google Nexus 7 (grouper)
*Unlocked Bootloader, Rooted
*USBRom on Cyanogenmod
Old phones in order:
HTC One (m7)
Apple iPhone 4S
Apple iPhone 4
Apple iPhone 3GS