My roadster doesn't have the Nav system. I did, however, test drive a coupe with it. I must say I was not impressed. No maps, just text. Considering it's a $1200 option, I would rather spend money on an aftermarket Nav system/radio, like the Pioneer AVIC-N1 ($1999). That radio will sound better, too. I'm not willing to spend $1200, much less $2000, to have a Nav system that I'll rarely use. I guess I'm old-school, but I still know how to read a map.