Re: Actually most satnavs are still remarkably unreliable
"For that matter. I find dedicated satnav devices significantly more usable than smartphone implementations."
Assuming you keep them up to date. I'm sure I could dig out a 10-15 year old satnav from my old tech cupboard that would get very confused at some updated motorway junctions.
Whereas screen sharing a smartphone maps app to your in car entertainment screen (whatever those tablet-y stereos are called now?) at least means you'll have an up to date map. Even if the marketing does try to get you to visit car dealers and fast food emporiums along the way.