I've had dash cams (Front and Rear) in my vehicles for years now and I've done over 200,000 miles worth of recording all over the 48 states and never got so much as a frame that I couldn't live without or that would be in any way helpful. Just lucky I guess, but IMHO, dash cams are better than trying to use parking cameras to attempt to do the job, especially when you're limited to 64GB. The built-in surround recorder is a toy like the AR dash and the Night Vision are toys. Yeah, AR navigation is neat, but I use Google.
Side Note: My Escalade is Crystal White Tricoat.