Back in the day there were customs that followed a theme termed "sanitary". The idea was to remove all extraneous trim, handles, everything so that the car was a pure smooth organic shape. Sometimes spats covered the rear wheels, completing the look.
The dash was likewise smoothed and molded and blended to its simplest possible form, removing all but one required gauge.
The upholstery was artful, often featuring very expensive leather, but very simple and without adornments like pleats, armrests, etc.
Opening the hood was a fun thing, the firewall smoothed and all lines and tubing, rubber hoses, wiring neatly hidden and everything painted and finished with as much care as the exterior. A powerful V-8 looked small in that vacant compartment.
When we saw such a car we said "That's sanitary, man".
That was a phase of automotive Americana that was never really internationalized, and certainly went away until recently, the dash of the Model 3 being a revival of that art, and it was art.
It is mostly just the Model 3 dash design for now, but there are minimalistic elements in various Tesla design details. It will be interesting to see how far they dare go with this and if others have the courage to follow. And of course if the buying public will accept this, being weaned from the comfort of kitschy complexity.