I never would consider Onstar if it wasn't for the extra features it has for the Volt. Like PP mentioned, you can get notifications to your phone regarding charging status. You can precondition the vehicle from places where the Fob won't work, etc etc.
My brakes too were a tad rusty upon pickup. The rotors had some surface rust but I got rid of that with some normal braking. Brakes work great (as a panic stop when a tractor trailer merged into my lane without looking) Now they just show regular surface rust but still lost of meat left on the pads. Oddly enough the Rotor hubs on my G37 were rustier.
My car charged fine all last night and wiggling the plug didn't cause a problem so I'm beginning to think it might possible be an issue with the power in the garage, like you first mentioned PP.
I don't know if Sunny is referring to my issue as his "hassle" but it's far from that. In fact owning the Volt is making things less of a hassle. Especially with the green plates. More use of HOV lanes, specific EV parking on occasion, Less stops to the pump, more money in my pocket. I don't see the hassle.
In regards to the comment that a Prius is the better choice over the Volt, unless you are driving the kind of commutes where the Volt isn't getting the benefits from its EV range (as mentioned many many times in this thread) then Yes...perhaps. But every review I have read, especially those comparing the Volt and the Prius, puts the Volt over the Prius. Better ride, better handling, better looks, better interior, more power, more fun to drive etc etc.
The Prius is gutless. This Volt has so much instant Torque...very fun.
Here's my "damage" for Monday and Tuesday. Would have been better but I stayed out late and my dink-ey level 1 charger didn't get me the full charge before I had to wake up at 5am:
Still much better than the 11-12L/100kms I was getting in my G....and again, I'm driving it spiritedly. Almost always in Sport mode.
I had a full charge last night and my drive to work today was all EV
.