What is the difference between ipod touch and iphone?

[kamlima]

The Dash Express GPS has real-time traffic and in addition to a user-developed database of actual traffic conditions. Will the new 3G iPhone with a built-in GPS ever have an application written for it which will recreate this feature? It seems like given the fact that the more units you have out there "monitoring" traffic, the better the real-time data will be, the iPhone would be a great platform (lots of units) to develop something like this.



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