Ever the frugal one ( cheapskate if you like) I concur with Lew &Anita.
How much dough is really involved in getting these electronic on-board video games to work ? First you have to buy the basic gizmos to carry along, then no doubt it starts to pile up with the investments required in all the various regional map programs, the computers needed to reprogram all this stuff for your particular tastes in routes etc. etc. the newest upgrades. And then the computer skills you need to run all this stuff of which I have zilch and no desire to get into either, - more time and $$ better spent actually on a trip.
Then the question of who programmed all the stuff no doubt including their particular bias as to where the gas stations, services etc. are that they favor or get sponsorship from .
Unless one is really exploring into unpopulated roadless dangerous tracts , or on a paid commercial night run where speed and acuracy are important I rweally can't see much purpose in gettting such electronics.
There is entertainment in just wandering and exploring , budget plenty of time to enjoy it with a basic or detailed paper map

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http://advrider.com/index.php?thread....207964/page-5 then scroll down to post #93