Whilst sat navs etc make life much easier, especially if there are major holdups, congestion etc., there is nothing quite like planning a route before hand, and making detailed direction notes on a note pad, suitably backed up with large maps. It keeps the passenger involved with the progress and direction of the journey reducing endless being ' driven' fatigue for the passenger and usually creates interaction during the journey. It also allows you the opportunity whilst planning the journey to check out different places along the way, on the internet, before you leave.
regards
John
And encourages friendly family discussions when getting lost. Joking aside we keep the sat nav as a back up only for the reasons you state.