Why did the service station mechanic always dress in disguise?

The service station mechanic always dressed in disguise to maintain a low profile and avoid drawing attention to his true identity. This was likely because he was involved in activities outside of his job that required secrecy, such as working on stolen vehicles or participating in underground racing. By concealing his appearance, he could blend in with customers and avoid suspicion from law enforcement or rival mechanics. His disguises allowed him to navigate his dual life more safely and effectively.