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.
The car's name originated from a phonetic rendering of the phrase "It's the only one there is". This Geneva-manufactured vehicle was created by Charles Bahni, who worked closely with Charles-Edouard Henriod in its early development.