A boy on a bike, in a gritty, urban setting, gets a bottle of Coca Cola.  When he drinks it, he starts riding his bicycle, and suddenly, he finds himself driving into a marching band that's on the vanguard of an oncoming parade.  He glides his bicycle through the throngs of marching musicians,   He joyfully drinks his coke, heading into more musicians, and then, his coke is finished.  He's back where he started, but better for the experience.