The Karsan J9 is a Turkish-built minibus that became a workhorse of the country's dolmuş shared-taxi network, and its rough diesel soundtrack is instantly familiar to anyone who has ridden one. 'Ara gaz' is Turkish slang for revving an engine while stationary, a bit of showing off that drivers and fans record and trade online. Clips like this circulate on Turkish soundboards and meme pages, where the J9's rattling idle has become a kind of folk sound effect. No single original recording is documented, so it survives as an anonymous piece of street culture.