This would be an assessment over the application and the efficiency of using vectors - thought it is interesting to hear that the satellite maps show a win as well.

When I'm traveling internationally, and have roaming disabled, I use Google Maps in "Standard View" very cautiously - keenly aware of that $0.15/megabyte charge I'm racking up.

So, for those cities that do have decent road layouts, routing, and POI information - this actually is a nice little benefit.