Congratulations on your new Volt. Enjoy!
On the oil change front, I have to agree with black88mx6. I have had my Volt a year and driven it 21K miles, over 18K on electricity. The oil life display currently shows 73% remaining. I think I remember reading that it puts up an oil change prompt after 2 years regardless of mileage or hours. I'm planning on waiting for that. So you very well maybe the first if you go ahead and do it. And we may indeed learn from you.
I have also read that the oil life indicators are actually very reliable. So I would suggest not doing it until the car prompts you to. Might as well save oil along with gas IMHO.
B1756 "Buy American, the job you save may be your own"