So people should just go around crashing into people who cut them off then?
Note that the Uber car did NOT crash into the car that cut them off. The car doing the "cutting off" ran into the Uber car (I'm assuming it hit the Uber car on its side, since TFA refers to the Uber car being knocked over on its side).
Now, it the human driver of the other vehicle decided that the Uber car had "cut him off" and crashed into the Uber car on purpose, that would fit your description nicely.
Alas, the Uber car had right of way, so it's really hard to get terribly upset at the EEEEVIL self-driving vehicle that got hit by a human who failed to stop/slow down when he was required to by law....