[elboru]

Yes, I'm a native Spanish speaker and Google Now works great with bilingual queries for me, that has been improving in recent years.

I always select English as my default language in my phones, some years ago if I wanted to call someone with a Spanish name saying something like "Call Ramon Hernandez" or asking for directions "Take me to Periférico de la Juventud" I used to had to fake an American accent. Today I don't have to do that anymore, I can speak natural Spanish and then it can understand my Mexican accent when I speak English. So it's not just improving in bilingual queries, they have focused in accents and mispronunciations.