Two more motorists have come forward in Jefferson County claiming to be victims of deadly rock-throwing attacks, with police telling Westword that the individuals were both targeted on the night of April 19 — just fifteen minutes before another driver, Alexa Bartell, was struck and fatally wounded. The two new victims, who were not hurt, had no idea that their respective incidents were part of a crime spree until after seeing a report about Bartell’s death on television, according to police…