Related Clues:

• Waste fumes escaping from vehicle engine
• It's old hat about America being a source of pollution
• Could he tax us for engine emissions?
• Weary old American in Panama, say
• Drain pipe?
• Wear out part of car?
• Heart of Texas in the USA -- it's awful empty
• Tire or tyre? (No, another part of car)
• Unwanted gas pipe?
• Drain part of car responsible for emissions
• Wear out part of a car
• Drain, deplete
• Car's waste gas
• Tire out completely
• Overhead cover protecting us behind old drain