What little hope Uber had of buying Nokia's Here mapping service just went out the window. A Wall Street Journal source claims that Audi, BMW and Daimler have tentatively agreed to buy Here for the equivalent of $2.7 billion. A final agreement could be ready within the "next few days," the tipster says. The German automakers won't hoard the navigation technology all to themselves, though. Instead, they'll reportedly give other vehicle brands a chance to claim their own stake and democratize the platform. While Here already has a presence in about 80 percent of the industry, this would make it a true mainstay for in-car mapping -- companies wouldn't have much incentive to license map data from the likes of Google or TomTom.