[Silveredwings]

Originally Posted by JacobAziza

The lead vehicle benefits from being drafted.
"In car drafting, the lead car is also getting a benefit. Trailing cars fill in the lead car's low-pressure wake, thereby cutting down pressure drag."
The Daytona 500: Flying Without Leaving the Ground | LiveScience

That and...

"The decrease in work for the lead car is substantial," Hill said.

I've thought that for a long time. The drafting vehicle is providing a kind of rolling boat tail for the lead vehicle.

I wonder why truckers object so violently to being drafted. I doubt it's because of an altruistic concern for car drivers' safety. Is it because they begrudge the economy realized by the cars, or is it just the ignorant belief that that such economy is at the truckers' expense?