Yep!
Sometimes it works.
Sometimes it doesn't.
(and, it's not easy to be on the phone [Bluetooth] to call your sister and tell her you're on your way and navigate downtown Boston at the same time :D)
Now, I'm not complaining. One shouldn't be driving, webbing and talking at the same time
In fact, most of the time that I need to look something up while on the phone I've got my PC handy. So, I don't care about the times it doesn't work.