Factory Navigation Systems? Maybe . . .
I drove a 2011 Toyota Prius V hybrid for eight years and loved its onboard navigation system. It was tied into the Bose speaker system and HVAC systems and more, so there was no option to buy without out it.
The maps ran off a CD that could be upgraded/replaced as often as Toyota made one available (for a fee), which made the upgrades as simple as could be imagined. It interfaced with GPS to show location from the satellites, but it got its highways & streets from the CD. That meant quick and automatic updates, like one would see on Google Satellite Maps/Images aren't quick or automatic.
I've had built-in Nav systems on other vehicles and appreciated them, but until I bought a fifth-wheel camper, I wasn't interested in anything more than hands-free street mapping. Sure, it's super convenient to have it built into the dash, with a big screen, and with voice-activated functions. But I was content with my cell phone's voice-activated Google Maps clipped into a charger/vent-mount for hands-free operation.
But now that I'm interested in learning about low bridges and bad roads, and since my wife get's 35% off of any Garmin product she orders through her employer, we just bought a Garmin RV 890 system.
(Warning: Short soap box preaching approaching
Thankfully Garmin doesn't waste time with speed traps. Signing your name on your Driver's License is a promise you'll obey all the traffic laws and speed limits. I don't lie, cheat, or steal, so speeding (lying & cheating) isn't even a thought in my mind.
(Passive-aggressive section complete. Scroll on by, there's nothing to see or argue with here. Remember your Mom's advice: if you can't say something nice, saying nothing. Or, T.H.I.N.K.: Try to offer things that are Thoughtful, Helpful, Important, Necessary, and Kind.)
I like the Garmin solution for the additional information it provides that isn't available in Google Maps. But if Google ever got that part of their product updated to where I could enter in vehicle info (weight, length, height) so that their technology would guide me away from dangerous or illegal roads with my double-tow (truck, camper, boat), I'd consider it.
Any factory / built-in Nav system in my vehicles will take a back seat to the Garmin until they can guide me around low bridges, past narrow or light-capacity bridges, and accurately (yes, I'm looking at your mistakes here, Google Maps), then I'd willingly consider it. There's a lot of value to me with the built-in systems. No hanging wires, no power adapters, no clutter on the dash or windshield or floor. That's the huge benefit from a built-in Nav system.