Drive cargo to border, hitch it to another truck for the next leg of the journey. Or move it in some other transport. Gets more expensive? It's either essential and someone will pay for the extra cost, or business goes to some more local competitor. Problem solved. Dealing with quarantines, and processes to transfer merchandise and crew the transports, is something that has been done for centuries. Not rocket science. (that's would be just mere decades old ). My point is, it's a problem that can be solved. If it isn't, and where it is pointed out as a roadblock, it's being used as an excuse for unwillingness to quarantine at the border for other reasons.