"Sleeping in My Car" was the final song the band recorded for "Crash! Boom! Bang!", and was written by Per Gessle. In the liner notes of their 1995 greatest hits compilation "Don't Bore Us, Get to the Chorus!", Gessle described how, on listening to the first playback of the album just before Christmas 1993, the duo realised that it was "missing something. It all sounded so... perfectly grown up." He elaborated: "We had worked for a year, much too long, endless hours of studio time... I mean, I loved it but there was too little P-O-P. Went straight home, really pissed off and came up with this neanderthal-riff and wrote it in an hour."