It may be better for the roads, but it may be overall worse for the environment and/or shipping costs. Building an entire truck isn't free from cost and enviro

It may be better for the roads, but it may be overall worse for the environment and/or shipping costs. Building an entire truck isn't free from cost and environmental impact, nor is maintaining it. Fuel usage also increases with more trucks. There's also an overhead each truck has that scales differently from how much it lugs, based on fuel it needs to carry and space for its driver.