Although electric can't be 100% analog, I miss the old days when a car has no software updates, no telemetry, no privacy issues, no mandatory subscription for features.
* It would be impossible to pass modern car emissions standards without electronic engine control.
* Backup cameras are mandatory, so you need an electronic pixel display somewhere.
* Lane keeping is required in Europe as of 2022, so that's a suite of sensors and computer-steering as a requirement.
* AEB will be required as of 2029 in the US, so that's a full electronic braking system (some form of pressure accumulator/source, solenoids/valves) and forward looking sensors (radar, lidar, visual, etc.).
I wonder if regulations would allow for a sort of periscope system.
(Not that it would be practical.)
https://www.ecfr.gov/current/title-49/part-571/section-571.1...
Nor practical but an analog system could probably meet the standard.
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Rearview image means a visual image, detected by means of a single source, of the area directly behind a vehicle that is provided in a single location to the vehicle operator and by means of indirect vision.
Rear visibility system means the set of devices or components which together perform the function of producing the rearview image as required under this standard.
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5.5 just says it needs to meet certain testing standards, start displaying within 2 seconds of backing up, and stop displaying when driving forward.