This single includes an insert song of the anime Gundam SEED, composed by Yuki Kajiura. There are two other versions of the song on the single (piano and acoustic), along with its karaoke version. Its catalog number is VICL-35646. Coincidentally, the insert song of Mobile Suit Gundam SEED Destiny (Gundam SEED's sequel), Honoh no Tobira, was released exactly one year after this single.
Originally, this song was released on "Suit CD vol.4 Miguel Ayman x Nicol Amarfi", an EP from Gundam SEED, under the name "FictionJunction featuring Yuuka". Due the song's popularity and the fact that September 2004 was Gundam SEED's one-year anniversary, it was later released as a single, which sold over 19,481 copies in the first week, at first obtaining the twelfth place on the Oricon charts, which later rose to the tenth. Akatsuki no Kuruma has been FictionJunction YUUKA's best-selling single.