Why rely on your car's built-in software for navigation? Smartphone navigation is going to be a lot better (in my experience) and Google, Apple privacy terms are greatly superior.
Do you hear yourself?
99.99999904% of roads don't change that much.
People used to navigate with decade-old paper maps stuffed in their glove boxes and nobody died because of it.
The few times when I found myself driving on I-11, which my car didn't know about, it was a novelty, not a crisis. I didn't drive off the road because the screen told me the road didn't exist. I used common sense and followed the signs.