The name "SYaKo" has existed since the Saga Period of SntMse. Originally, there was also a kanji notation, "車好 陽人" and read "Shakō Yojin". At the time of the Saga Period, I had a strong dream of getting a job to make cars in the future, so I chose this name as "車好 = car lover" and "陽人 = cheerful person". Although, kanji notation is not used these days.
The reason for creating the SYK account was that I became interested in using Twitter during the Saga Period. At that time, there was still strong resistance for SntMse to publishing the real name on the Internet, so a pseudonym was needed. Therefore, as a result of trial and error, I decided to use the name "Shakō Yojin". At that time, although the SYK account existed, the email address was not yet created. However, at the end of the Saga period, the SYK account's email address was created because SntMse was into creating accounts on the Internet, and at that time.
In the middle of the New York Period, the main email address of the CRD accounts, which had been the main account of SntMse faced an unknown technical problem. Therefore, changing the main account was necessary. As a result, the main account was changed to the SYK account, which was the second-largest accounts after the CRD accounts and CRS accounts at that time. Aside from the CRD accounts, the CRS accounts didn't become the main account because of the naming background of "SYaKo". The name of the CRS system did not have a deep meaning as "CaRSh = car + Shintaro", but "SYaKo" had the meaning written above. Also, at that time the SntMse's dream of becoming a "car designer" gradually changing. This is why the SYK account became the main account of SntMse.