Buuxi weedhan soo socota: Baabuur badan oo tartan oo hore ayaa isticmaalay matoorro afar-geesood ah, si kastaba ha noqotee matoorka Peugeot ee ku guuleystay tartanka
1913 Indianapolis 500 waxay ahayd mishiin aad u awood badan. Waxaa naqshadeeyay Ernest Henry, matoorkani wuxuu lahaa laba geesood oo laba geesood ah (DOHC) oo leh afar waalka halkii silsilad, qaabeyn taas oo noqon doonta heerka ilaa maanta ee tartanka inline-afar matoor.