a trailer released on 9 july features the first gameplay footage. it demonstrates the shooting and driving mechanics, and the ability to swap between characters instantaneously. "grand theft auto online" was unveiled in a trailer released on 15 august. the video displayed activities like bank heists, small robberies, "traditional" game modes, purchase of property and bicycle-riding. the final pre-launch trailer was released on 29 august, intended to be a television advertisement. the song "sleepwalking" by american band the chain gang of 1974 was used in this trailer.