The TomTom car mount is now available at US Apple store for $120. A bit pricey, but as we've seen in previous posts it gives you full GPS for the full phone, not just the TomTom app. That said, you can get a low end dedicated GPS unit for under $100, so $120 for the kit, plus $90-100 for the GPS software from Navigon or TomTom (though there are a couple of good GPS apps for $20-30) might be a bit pricey. Still, looking forward to seeing some reviews of this.