I used the navigation function in the "car home" app this weekend for the first time. The nav. worked great. Voice directions were clear and actually helpful for a change and the gps kept a lock on me. However, I had to make a call to tell my friend I was going to be a little late, only to find out after the call ended that navigation was lost. Luckily, I remembered the address and re-started navigation. So two things, I suppose: 1) Can you easily recall previous destinations? 2) Is there a specific way to make/receive calls while using the app? - I noticed if I use use the back button and go through the car app (contacts, voice search) I can get back and forth from nav. to phone pretty well. But it still doesn't seem right.