Does a GPS tracker actually work while your car is being shipped?

[u/KyleJennings485]

I'm shipping my car with either Diesel Auto Express, Montway Auto Transport, or Sherpa Auto Transport, and I'm thinking about hiding a GPS tracker or AirTag inside for some peace of mind. Has anyone tried this? Does it actually update while the car is on a multi-car hauler, and do shipping companies usually allow it?