Uber's cars and Otto's trucks are different platforms I believe (for now at least.) The beer delivery was a publicity stunt, but definitely impressive. However it was largely made possible by a team who had spent years at Google figuring out how to do it :)

It's definitely possible for a team to come along and catch up/overtake the Google (now Waymo) project, but I agree with jimmywanger it's not a valid comparison for the sake of this discussion. Uber is following a different path than Google focused on, and is hugely benefitting (as is the whole industry) from the work done at Google.