At the dawn of the 1980s, when performance cars were limping through an era of emissions controls and shrinking engines, some of the quickest machines on American roads were not sleek coupes but heavy ...

It may sound unrealistic, but nearly every new heavy-duty, semi-truck (Class 8) sold in the United States (99.9% of them, in fact) comes from just seven brands, which in turn are owned by only four ...