а вы куда

and where are you going?

→ а
phrase Rare #36,223
and where are you going? An informal elliptical question meaning “and where are you headed?” The verb is often omitted and understood from context; вы can refer to one person politely or to several people.
RU: Мы идём в кафе. А вы куда?
EN: We’re going to a café. And where are you going?

А вы куда пойдёте?

And where will you go?

— Ветер крепчает (2013)

А вы куда, Борис Иваныч?

And where are you off to, Boris Ivanych?

— Дневной дозор (2006)

А вы куда звонили?

Who did you call?

— Иваново детство (1962)

А вы куда смотрите?

Where are you looking?

— Замри-умри-воскресни! (1990)

А вы куда?

Where are you going?

— Ночи Кабирии (1957)