Car hauler trailers are enclosed trailers that are designed for people engaged in transporting cars.  These enclosed trailers are gooseneck trailers that are outfitted with flooring, 12 or more d-rings or an e-track tie down system, and a section of overhead cabinets.  These cabinets are used to store the tie down system straps.  Flooring is generally recommended because cars can leak fluids that will damage wood flooring.  It is recommended to add flooring ATP, vinyl or rubber coin flooring for longer life and additional durability.  These trailers are occasionally equipped with air conditioning and bathrooms to allow drivers to stay in the trailer on overnight trips.  The Millennium Silver Pro and Diamond Pro make great car hauler trailers because they come standard with Advantech flooring and a 5 year warranty, they are built for frequent use.