I think the bigger point is that Google has created a revisionist story about the origin of its self-driving car that the vast majority of people, including myself, would never have known about. For example, there was no mention of it at this summer's self-driving car exhibit at the Computer History Museum in Mountain View. Is it necessary that Google represent the true story in its marketing material? No, of course not, but it is strange that they would go to that extent to keep the acquisition a secret for so long.
Have not seen the museum. So long as they are crediting the engineers from the DARPA contests then the story is not revisionist. Everything since DARPA has been fairly incremental with contributions from a wide variety of people (including 510). There just isn't a Da Vinci code type conspiracy going on here.