RB, your suggestion about highway 132 makes perfect sense. This would, IMO be the selected route west from Modesto from both the Peterson residence and the warehouse versus driving up to the 120 Manteca by-pass.
Just a thought, Ya know those cameras that MPD has installed at various intersections around town? The ones that are supposed to be for traffic control and not traffic enforcement ie. running red lights, etc. Wonder if they have a tape library at the cop shop and if those would produce any info to support or refute SP's supposed trip to Berkeley?!?!
Thought of that same possibility back when the Sund/Pelosi ladies went missing and they found Carol Sund's wallet along Briggsmore.
The mind is a terrible thing to waste - that's why I shop here on these threads. :)