It is affectionately known as "The Rock" and hosted two NASCAR Cup Series, the Subway 400 (1966–2004) and the Pop Secret Microwave Popcorn 400 (1965–2003), as well as two Busch Series races ...

The backrests on passenger seats are taller to provide comfort. For the first time on an Osaka Metro subway train, the 400 series has some cross seats at the windows. Security cameras will allow ...