Randomly Noticed on the Highway

So I was driving on the 10 Freeway in the Inland Empire (having visited my parents).  On the side of the road, I noticed a CHP car right behind a van.  It appeared they were moving at a very slow speed.  I was like, "What's up with that, some slow cop chase?"  Actually, as I looked more carefully, it appeared that the van had stalled out and the CHP car was pushing the vehicle towards the nearby freeway exit.  Randomness on the roads.