Would not recommend it

I have it installed in my Porsche 911 about 6 months ago. It is not worth even 20 percent of its price. User interface is very inconvenient. Voice command system is useless. Switching tracks on connected iPod requires a lot of attention -- don't do it while driving. Volume of navigation prompts can not be adjusted on the fly... If I try to recall all my complains, it will take an hour just to list. Overall, the worst car GPS I ever had (out of 5). $700 Garmin Streetpilot is MUCH, MUCH, MUCH better in all respects.