This sound is very simple and was made by anhembi morumbi university's students on studio. You can use it for opening sounds in general, but it suits like 100% a champagne opening (in my opinion) and the one who recorded it was maria laura ligeiro cavalcanti.
As the name implies, this was a recording of the street just across from union station, with a cool roaring of a bus coming from the left to the right and some other cool stereo unique sounds. As for credit, no need, enjoy.