Does anyone know if the Driver Assistance package (not Driver Awareness package) comes standard on the 2013 SRX Premium trim line? When I use the "build your own" option from the Cadillac website, I do not see the option to add this package nor an associated price. I'm a bit concerned that I ordered my SRX several weeks ago (now awaiting delivery) and that it was built without the adaptive cruise control option that I wanted. Lastly, does anyone know if this feature can be added post-production? Thanks in advance and my apologies if I'm just missing something obvious.