Related Clues:

• They get into jams
• Gridlock components
• Freeway fillers
• Road runners
• Lemons or cream puffs
• Car parts
• Power sources
• Sedans, e.g.
• They get people into jams
• They create carbon monoxide
• Lot fillers
• They're sold in lots
• Latter-day chariots
• Firefighters
• Gridlock ingredients