Drivers obviously prefer a fixed route they know, but a complex routing algorithm could shift borders of neighborhoods or even interleave routes to meet timely

Drivers obviously prefer a fixed route they know, but a complex routing algorithm could shift borders of neighborhoods or even interleave routes to meet timely appointments or size and weight constraints. Consider fairness, too, to equalize load. Overall it seems the problem is fixed with brute force, taken to the extreme as in the topical article.