That won't work as vloggers showed the location of the van and Gabby's body was found nearby. Since he came home in the van......
Well, regarding my phone, you can go back years and see where my phone was with pretty good accuracy for any time of any day.
When I worked with law enforcement relations for a major cell provider I used to tell people, “if you’re planning on doing something nefarious, don’t take your phone.”
Your phone is constantly pining towers and this data is kept for years to be subpoena’d by law enforcement and can be used to track your physical location at any given time with ridiculous accuracy.
But she could have pulled the “stop the car and let me out here!” card. So he did.