"At the time, none of the major automakers had spelled out a serious plan for getting fully self-driving cars on the road." Even if it had worked out, a deal with Waymo would not have been a "serious plan". This deal only amounted to throwing money at a hype factory in order to gain credibility in an imaginary market. Waymo hasn't proven it's even on track to create a workable product in the next decade. Google in pa…
Google does launch experimental projects and does kill them off if they fail, but I don't see why you think this would be true with Waymo.