Satellite images don't work as maps simply because trees exist. I grew up in a national forest and looking at satellite images you'd never know my road existed,

Satellite images don't work as maps simply because trees exist. I grew up in a national forest and looking at satellite images you'd never know my road existed, or all the roads that connect into it. The trees make a canopy over the road and it's impossible to tell there's anything under them. Same problem with rivers... a lot of rivers show up the same color as the forest on satellite images so you'd never know there was a river there even if you can "see" the water. Depending on the angle of the satellite, this problem exists in large cities as well. Roads are obscured by skyscrapers even at the slightest angle, and roads disappear from the picture without telling you if they went underground into tunnels or just ended. Now, satellite pictures overlaid with map data, that works. But just satellite pictures by themselves isn't enough to navigate.