Speed units after crossing border to different region

[seahorse41]

My setting for units of measure are Miles and MPH. The Region is Automatic.
I don't see any setting to accommodate what is to be displayed, or spoken, when traveling across a border, like from USA to Canada, where the units on the signs change to Km and KPH.
It then becomes extra work to determine when the Speed limit is announced and shown to be 37 MPH, if that was 60 or 70 KPH. I can no longer read the numbers, but am left with looking to see if my current speed is above or below the number that does not correspond to the signage.

I would like it to say and show the speed limit in the local format/units.
Perhaps this should be considered a Feature request, can a toggle setting be made, "Rigid" or "Only show" , so that the speed units can switch to read the same numbers as seen on the signs?
Without stopping the navigation, going into settings in 2 places, and switching the units every time I cross the border. That would kinda mess up being able to project my arrival time.

I am not suggesting the entire GPX route being recorded should change from Miles to Km because that might be difficult or confusing.
Thank you

[vshcherb]

This is really interesting case that was not fully considered. Indeed it could be confusing changing everything automatically though clearly the road signs are changing.

[seahorse41]

Depends on what "everything" means, but the region setting "Automatic" should really mean that when crossing a border of a region.
The distance and speed in upper left and right are shown with units, so it should be ok to change just some of the displays to read in a region unit inconsistent with the other tags.
I can understand the concern, not everybody would want the same behavior.
It's really only the speed I'm concerned with, distances kept in miles may not match signage in km, but those signs are really few and far between. It should be up to the user if they can handle having the units change.
So I would see two settings, distance and speed, needing an option for Rigid or Automatic.

My 2 cents and clarification.