At first glance, an 18-speed transmission sounds like overkill. After all, most cars get by with five or six gears. But semi trucks are built for an entirely different purpose, and that is moving ...

It’s a warm summer evening and all the car guys are out on the town. Through the night air carries the sound of a sweet-running small-block crisply hitting that wide-open-throttle 1-2 shift. You ...