Huh? "Polo"! How elegant. Too bad the evidence for it seems to be basically hearsay.
Maybe someone digs up a German source? Would be a cool addition to the Polo's Wikipedia articles. (The German Wikipedia says it's after sport not after the polar wind, but it's entirely unsourced.)
It was received wisdom to me, but on closer inspection, it seems to be all nonsense: https://www.thetruthaboutcars.com/2013/05/inside-the-industr...
My apologies!
* Golf - Gulf Stream,
* Jetta - Jet Stream,
* Passat - Trade wind,
* Polo - Polar winds,
* Scirocco - Mediterranean/Saharan wind.