When you’re 5 years old you get asked questions like “What do you want to be when you grow up?” Well, OpenStreetMap is 5 years old and there are a few answers to that question. But maybe a good first answer would be “banned on Google Enterprise maps”. You must of made an impact by then, huh? And yes, it’s true!
[...] You agree not to, and not to allow third parties or Your End Users, to use the Services or Content: [...] to use or display Tele Atlas’ US Address Points obtained from the Services on a base map comprised of map data or content provided by International Publishers NV, NavNGo Kft., NAVTEQ Corporation, OpenStreetMap Foundation, or Zenrin Co., Ltd. [...]
Check it out on the Google Maps API Premier Acceptable Use Policy.