Originally Posted by Mandel
As far as I know, neither one is really meant (yet?) to be used while driving
The very fact that neither offers voice is on it's own a no-go for driving.
I think the only version of Google Maps that is coded for driving is the version written for the DROID phone. The GM versions written for the BB are for reference only I would think. I know Garmin has an app for the BB which is meant to be a full blown GPS tracking application called Garmin Mobile but it's about $99 w/o a GPS puck. Haven't had much experience with BB Maps as I find it a bit clunky (I'm using v.4.5). In time, I'm sure there will be more options as dedicated GPS units may become a thing of the past.