Passive rear wheel steering, or lateral rear suspsension compliance has been use for a long time.
Citroen used to use fully active suspension systems many years ago for all its cars. Even back into the 1960s. Way ahead of its time.
The ZX, launched in 1988, uses conventional suspension. Citroen built in some passive rear wheel steering and the press lauded praise upon the car for its tidy handling and sheer grip.
Many journalists were eager to trash Citroen for failing to use it's own Oleo-Pneumatic system in the ZX. They didn't.
I think that Honda possibly went overboard with the rw steering. It wasn't strictly necessary as the cars were capable and handled well anyway.
Honda's system could give a very strange feel to the car's direction at low speed.
I could feel as if you were trying to drift and hang out the back end at parking speeds (sub 5mph)!
At high speed the system points the rear wheels in the same direction as the front ones, although to a much smaller degree. The idea was to maintain stability during a high speed and sudden lane change on a motorway, for example.
It worked very well indeed.
My only concern is this - if you need to make regular and sudden lane changes at 3 figure speeds then perhaps you should re-assess your driving and observation skills.
That said, IT WORKS, and does so brilliantly.