All brokers access a common database on open hauls. A broker you are working with will put your haul and a price into the database and post it for a guy with a truck to accept it. Sometimes it gets picked up quickly, sometimes it takes longer and requires you to raise the price you are willing to pay to attract a driver. It does not do any good to use more than one broker as they will all post your haul in the database. This process works to get stuff moved, but can be a crap shoot as to the quality of the driver, company and equipment that picks up your car. I had too many bad experiences using broker so now prefer to work directly with the company that owns the equipment and employs the drivers.