IDK, I just don't see him driving a dead body all the way to Fremont. Driving the freeway could be deal breaker with a body in the car.
I keep thinking she is nearby. If he drove up any of the three streets near her home, they are isolated roads. When I was there, the only vehicle I notices was a mail delivery truck. Almost every road that crosses Santa Theresa leads to the hills and is is not far, maybe a mile max...but I don't think it was even a mile. He could turn around after, go straight down Laguna and drop off the bag.
I still think he got picked up on camera on Laguna after dropping the bag. He may have continued thinking he could pick up the main street to home but Laguna doesn't go through. He would have had to U-turn passed those very expensive homes which may have had cameras.
Did we ever hear anything about the foreclosed house on Scheller where evidence bags were removed? That place was very close to "S" home. It runs parallel with Laguna.
Did he have a connection with the work camp located directly in back of Sierra's street? There were many hispanics there who worked the fields and waited for rides. One of them was always seen walking at the bottom of Sierra's st almost every morning while talking on a phone. He had not been seen since the crime....but a neighbor got a good look at him.