Related Clues:

• They pull their load
• They get people into jams
• They create carbon monoxide
• Long rides?
• Rigs with wheels
• Freight haulers
• Lot fillers
• Truck stop lineup
• Weigh station sights
• They're sold in lots
• Penultimate playoffs
• Certain tournament round
• Latter-day chariots
• Next-to-last round
• Gridlock ingredients