This is speculation on your part.
He said the vehicles crashed on a two-lane asphalt highway where the speed limit is 75 mph
A tractor in an open field moving at 20 mph isn't equivalent to a vehicle on a two lane highway at speeds up to 75 mph.
“This is speculation on your part.”
And you of course have all the facts, and nothing but the facts.
For all any of us know, the van with a large trailer was fish tailing, and the pickup changed lanes to avoid it.
Admit your ignorance, ass.