[BRAlNlAC]

If that is truly your goal, it is a noble one, but in that case baking the pathfinding into the roads seems like a bad design choice. People get lost driving in a convoluted city a lot even with GPS, but much less so in a regular blocked city.

[theanzelm]

Making them get lost is as easy as picking a random turn instead of the correct one with a certain probability.