The name emerged as the most popular in a national online survey, with “super extremely hot day” in second place.

I had to look this up and I’m surprised this wasn’t some wordplay that they just didn’t bother to translate. It really was just stacking another modifier on the old hottest category. 超猛暑日/猛暑日 chomoshobi/moshobi

Missed opportunity to name it after automanufacturers.

Especially given Toyota’s lobbying against fuel efficiency standards.