Its name was a phonetic rendering of the phrase  'Y a que ça ("It's the only one there is"). Of Genevan manufacture, the car was built by Charles Bahni, an early collaborator of Charles-Edouard Henriod.
Its name was inspired by the phrase  'Y a que ça ("It's the only one there is"). The vehicle, of Genevan origin, was crafted by Charles Bahni, a pioneer collaborator of Charles-Edouard Henriod.