Related Clues:

• Convoy unit
• Truck type
• Rig on the road
• It's in for the long haul
• Next-to-last round
• Highway rig
• Kind of conductor
• Formal opening
• Sweet lead-in
• Highway behemoth
• Part of a trucker's rig
• Formal introduction
• House type
• ''___-Tough''
• Prefix meaning "half"