I recently googled "driving without power steering" and came up with some pretty involved conversations about driving with power steering disable or entirely removed from the posters' cars!
And I think I understand the reasoning behind some of the folks on these groups suggesting not just "tying the lines shut and removing the PS accessory belt" but replacing the PS rack with a manual rack: Driving with disabled PS is much more of a bitch than driving a car that was built without/before PS in the first place.
So how could I suggest to U.S. automakers a compromise between normal everyday power steering(numb!) and pre-WWII manual steering: progressively shut down PS, in incremental measurements of wheel rotation as a function of the car's speed, starting at 15-20mph?
By the time the car is doing 40, there simply is NO PS assist AT ALL. Power steering(whether by hydraulic, electric, or tiny elves under the hood pushing the rack & pinion back and forth acc to a telegraph attached to the steering column) should be active only for close quarters - as in parking lots and parallel parking. Above 20mph, it rapidly fades off until 40mph, where the car's alignment specs take over the straight tracking aspect of the ride.
This system is flexible of course, and could be programmed to fade out PS at a higher speed for larger cars - say 50mph instead of 40, and
20mph instead of 30 for smaller roadsters.-CC