Been noticing that some folks have rear back-up camera lines that turn when you turn the steering wheel. Was this limited to certain models? Same with the mirrors that angle down in reverse (when the selector is on L or R). Our XSE with the Plus package doesn't seem to have either of these features (I ran out to try them after reading on this forum!). Anyone else noticing this? Trying to figure out if there were minor changes in recent builds or if it was based on model/features.