Wikipedia
Fileteado is a type of artistic drawing, with stylised lines and flowered, climbing plants, typically used in Buenos Aires, Argentina. It is used to adorn all kind of beloved objects: signs, taxis, lorries and even the old colectivos, Buenos Aires's buses.
Filetes (the lines in fileteado style) are usually full of colored ornaments and symmetries completed with poetic phrases, sayings and aphorisms, both humorous or roguish, emotional or philosophical. They have been part of the culture of the PorteƱos (inhabitants of Buenos Aires) since the beginnings of the 20th century.
The filetes were born as simple ornaments, becoming an emblematic form of art for the city. Many of its initiators were European immigrants, who brought from Europe some elements or art, that were mixed with the local tradition, creating a very typical Argentine style. The fileteado was recognized as an art after 1970, when it was exhibited for the first time.