A woman called to report that she and her daughter, after going to a pharmacy, were driving home from Lodi to Stockton along Route 3 and other rural roads. Suddenly, her daughter saw a big round disc, with bright lights inside its rim, that appeared to be following them.

They lost it and got back in the car (!!), and went to a second pharmacy.  When they left the second pharmacy, they witnessed the object a second time, this time right beside their car.  They got a very good look at the object this time. 
It appeared to them to be the size of an aircraft--perhaps a 747--and it was distinctly round.  When asked, the caller said she thought it was more spherical than circular.  It had many white lights on it, perhaps a hundred or more. 
The occupants of other cars saw it, too.  There were possibly two other cars that had stopped, and the occupants were standing outside looking at the object.  They were stopped in an area which is totally dark, with nothing but fields around.
They called the Lodi Police to inquire whether there had been other calls.  They said there had been no other calls. 
I gave the caller Ruben Uriarte's address.