Most auto hauling companies prohibit the inclusion of personal items in vehicles being shipped. This is for three very good reasons:
License & Insurance - It is against FMCSA regulations for carriers to transport personal possessions within a vehicle. Carriers risk fines for transporting any personal possessions. In addition, the carrier’s insurance typically does not cover the loss or damage of personal possessions included in a vehicle being shipped.
Weight - Auto haulers have strict limits on the weight of loaded trucks and trailers. Additional, unanticipated weight of personal items could cause carriers to be overweight. In this situation, the carrier has to make a choice to drive overweight (risking fines and significant delays) or not take the vehicle.
Safety - Extra weight in the car could cause damage to the undercarriage during loading and unloading.