This is really shouldn’t be an issue. Many car manufacturers are leveraging and 
improving already existing cellular data systems in their cars to provide 
software and firmware updates over the air.  I suspect the issue is more the 
long supply chain lead times…there is a several year lag between deciding to 
have a feature and getting the car hardware and software out to the public. 

Unless you are Tesla.

-Pete

> On Mar 6, 2020, at 07:10, GERRY ASHTON <ashto...@comcast.net> wrote:
> 
> I just got a 2020 car which offers to sync the clock on the instrument panel 
> to the GPS receiver. But the time zone and observance of DST must be set 
> manually. In principle, if the position is known, the time zone and DST can 
> be looked up. But since the software in the car is not routinely updated and 
> the various national, state, and provincial legislatures like to monkey with 
> this, look up is not feasible.
> 
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