An F-250 and a trailer for two cars, a combined gross weight of 20k lbs, moving my car dealership, what licenses do I need?

I'm not pulling for rent. I own a lot cars. Combined PTC under 20k lbs. F-250 with trailer Two gooseneck car. Do I need a CDL? Do I need DOT # s? Do I need a sign on my truck? Do I need additional licenses or inspections? Can I travel out of state?

COme on now Richard. I can not believe that someone who is a self-proclaimed "Used Car Lot "does not know or have access to this information. I see that you are about to do some transport from the shadows and trying to find what you need if the cops watch you.

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