From cab design to road regulations, here are 15 key reasons these trucks are built for their unique environments.

You could live a comfortable life on the road in this big rig. Sleeper cabs are a fairly common feature on long-haul semi-trucks, but they're nothing like the custom setup this couple has on their ...

The GMC Crackerbox might be the biggest nostalgia hit for fans of old-school heavy trucks ... who constructed the sleeper. GMCs like these are notoriously narrow; the cab measures just 48 inches ...