The story is sourced to SEO By the Sea which in turn sites the US Patent Office database:
From the USPTO assignments database, it appears that Google has acquired Facet Technologies interest in the assigment of a number of their patents, which I’ve listed below. The execution data on the assignments is listed as June 21, 2011, and the assignments were recorded with the patent office on August 8, 2010. The USTPO database doesn’t provide any details behind the transaction such as costs or other considerations involved or licensing agreements that Facet Tech might have in place with other companies, or if Google acquired the company, its maps databases or just some of its intellectual property.
Facet was one of the companies way back that collected data for Google. The company has licensed its patents to TomTom. But now it seems Google will own the IP for use in data capture, mapping and suggests the article self driving car development.
There are nine patents and Bill Slawski does a good job arranging and discussing them; check the patents and his analysis out. I have nothing to add!