I'd think making a nav system work properly with given map once is more efficient than making hundreds of drivers to constantly learn it over and over.

> It makes for an unpleasant experience whether you're on a bike, driving you car, or sometimes just walking across the street.

How drivers guided by a nav system is worse for streetwalkers than any other drivers? And, from my experience, long-term commercial driving doesn't always make a driver a model road citizen - in fact, in many places taxi drivers are kinda notorious for being less than model co-roaders.