Some highways are now absolutely filled with trucks, to the extent that they outnumber passenger vehicles - I80 for example. While truckers are for the most part professional, not all of them are - like the one who intentionally gave the impression of being about to smash my car between his rig and another truck north of NYC a few years back.

Passenger vehicles are not on equal terms when traveling with trucks, safety wise. As someone who travels by auto often, I would definitely prefer to see fewer trucks crowding the roads.