Most Auto Carrier companies prefer Not to haul vehicles with personal items due to the following reasons:

• Personal Items not part of the vehicle are not covered under auto transport cargo carrier insurance due to lack of inventory. 
• Due to lack of insurance coverage for personal items i the vehicle, the driver would not want to assume liability. 
• In some states, transporting a vehicle packed with personal items could be a punishable offense by penalty or fine.  
• On the road, there are many traffic stops by authorities & having a packed vehicle would ensure that vehicle will get searched. 
• In the end, the driver would only assume liability based on the coverage the assigned carrier provides. 

All auto carriers are required by law to have auto transport cargo insurance to cover their shipments in case of damage during delivery. The insurance that the auto carrier provides only covers the vehicle that is being transported. The full automobile and everything part of it would be covered under the Cargo Carrier Insurance provided by the driver.

Items that are not part of the car would Not be covered under the Cargo Carrier insurance. This means personal items such as clothes, boxes, furniture, etc...

A driver would not want to assume liability over your personal items due to lack of proper inventory. Some drivers will make an exception but that is usually a deal struck between the actual driver and the customer on site at pickup. This would usually involve a little extra kick back or what most would call a "tip".

In the end, always remember that auto transport drivers are Not obligated to haul your vehicle packed with personal items. Any decisions on this matter ultimatley falls on the driver who is doing the actual driving and will be held accountable for anything under the care of the appointed carrier. This decision is completely up to the driver.

Learn More: Are personal items allowed during transport?