Message: Does anyone know the differences between the Mopar RB1 and RB4 navigation systems? The RB4 is the newest one but it's $200 less... it's got to have less features but I can't tell what the major difference is to make it cheaper. If anything I'd think it would be more because it loads the route into memory so you can use the cd player while navigating.... anyone?.... Links?
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Subject: Navigation difference?