yeah i think your allowed 5 fav destinations that you can have set up with a short cut key which you can access while driving, you just cant enter a new destination while driving, you still get your guidance, just means you need to pull over every time you need to enter a new place to go, i must admit i dont mind the actual nav system, just wish i could enter the address while driving, apparently the new model rx 350 uses a mouse to enter info, no more touch screen..