> I would be very impressed if [no cell service] negatively impacted
Tesla issued a press release years ago in which they reassured the public that their cars were used in connection-less or heavily-firewalled territories, and they still run.
While on the one hand those reassurances are sinister ("our new feature will not impair function"; "our electronic systems will not fail when driving in the desert" - which was false for some manufacturers), also note that - as one poster nearby notes - that the item seems to work properly at some point in time is not a warranty for the future.
Tesla issued a press release years ago in which they reassured the public that their cars were used in connection-less or heavily-firewalled territories, and they still run.
While on the one hand those reassurances are sinister ("our new feature will not impair function"; "our electronic systems will not fail when driving in the desert" - which was false for some manufacturers), also note that - as one poster nearby notes - that the item seems to work properly at some point in time is not a warranty for the future.