hi, i put the nexus one google navigation to a test today, and i must say it was very good. i had never used a google voice navigation before, i only had used garmin, and i was very impressed. the directions were super fast, the voice was clear and consise. absolutely no lag or hesitation, re-routing was super fast. when i drove to work this a.m. i put my work address into the nav and off we went, when i pulled into my parking spot she said, "you have arrived and a picture of my office bldg. popped up on the screen, that was wild. so far, i really like it. peace!