well... completed a road trip yesterday between my house (st. joseph), to bourbonnais on 57 and all the way back up to grand rapids. the v1 was great. i had rabbits doing 100+ the entire way, and on the return trip had a guy with a 9500 on the dash. the v1 alerted me everytime (although it was a little chatty in some area on the hwy) and was fun to watch the guy ahead of me brake 2 seconds after i got an alert. just goes to show how effective the v1 is.