$48,000.00 and I have a navigation system that is pretty much worthless..Hopefully I'm the problem but I don't think so..My nav system in my new 2017 Limited sends me on a 5 1/2 hour route on a trip that I drive in 4 hours without the navigation..This is not just one exception but for most every destination more than an hour or two away.. I've set the preferences for fastest route and included every type road..Is it me or is it just worthless? Dealer tells me nothing is wrong with it and they have NEVER received a complaint..I'm callin b.s. on that..Anyone here unhappy with the nav system? Anything I can do upgrade it?