What a hot shot truck is
A hot shot truck is a heavy-duty one-ton or larger pickup, often a dually with dual rear wheels, in weight Classes 3 to 5.
It pulls a flatbed or gooseneck trailer and is dispatched for one load at a time. The truck picks up the freight and drives straight to the destination, with no terminal stops. The name comes from urgent runs in the oilfields, where a missing part could stop a rig and nobody could wait.