According to the EPA, transportation produced 28% of the greenhouse gases released in the United States in 2022, and nearly a quarter of that came from heavy vehicles – more now than from passenger cars. Long-haul trucking is therefore a low-hanging fruit for efforts to mitigate climate change…

The article left me with more questions than answers but at least it is an attempt.

For one, is a single axel propelling the entire rig at that point?