Hi, We got a 2014 CTS 4 2.0 L recently. I think I have figured out pretty much everything so far except for the green car icon on the left lower part of the customizable 5.7 inch display. I can't tell what it is and it is not in the manual either. This green car shaped icon comes on intermittently and when it is not showing, the odometer reading is displayed in that area. Any thoughts on what it is? I could probably take a picture and upload it if that would help.