STOCKTON — Stockton police officers had an auto theft suspect at gunpoint Saturday afternoon when an unrelated road rage incident led to a four-car collision at the same location. The suspect then fled in the stolen vehicle, but he was apprehended following a high-speed pursuit.“It was just shocking,” said Tony Cid, 32, who witnessed the standoff and the collision while standing in his front yard.The wild sequence of events began shortly before 4:15 p.