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Re:‘A huge blunder’: GM’s decision to ditch CarPlay, Android... by getpost on Friday April 14, 2023 @09:15PM (#35576759)
> constant cellular connection

This isn't at all required for music or maps. Phones have up to a terabyte of storage now.

Re:‘A huge blunder’: GM’s decision to ditch CarPlay, Android... by bobbylarrybobby on Saturday April 15, 2023 @01:43AM (#35577928)
It is not theoretically required, but most (all?) phones don't cache all the map tiles between the origin and destination. You'd have to proactively download all the map regions you think you might need.
Re:‘A huge blunder’: GM’s decision to ditch CarPlay, Android... by 8ytecoder on Saturday April 15, 2023 @03:09AM (#35578342)
Google Maps and Here Maps both support offline (Sygic is another).
Re:‘A huge blunder’: GM’s decision to ditch CarPlay, Android... by ascorbic on Saturday April 15, 2023 @04:55AM (#35578854)
Google Maps prompts me to do just that when I navigate any kind of distance. Not sure if it's only when driving through areas with poor reception.