a tired but satisfied mechanic wipes grease from his hands with a rag while standing next to a car with its hood open. Tools are scattered around the workspace showing the extensive work that was done. The car's engine now runs smoothly with steam rising gently from under the hood. The mechanic's face shows exhaustion mixed with pride as he looks at the completed repair. His assistant gives him a thumbs up from across the garage, celebrating the successful completion. finishing a difficult and unpleasant mechanical job