I am always the passenger in the Lexus, and I am unable to do much of anything while the car is in motion (lame "safety" feature). Many of the restaurant POIs (in New Jersey at least) are simply in the wrong place. I think the map data sucks, but the recalculation is very fast when you go off route.
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-Rob Riccardelli
80GB 16MB MK2 090000736