My rear headrests were gone the day I got the car! They now live in a plastic bag in the storage closet. I also discovered that, depending on how far back the front seats are, the rear seats will sometimes not fold flat if the rear head rests are in place without hitting the back of the front seats...
59,991 miles/12 bars/289 Gids/68.54 AHr/101% SOH/101.64% Hx 7May15 w/ new Lizard (barely made the warranty).
71,770 miles/12 bars/256 Gids/59.04 AHr/88% SOH/87.92% Hx 3Mar16 at lease return.
Now driving a 2016 Volt Premier.