What is the beginning date of this inaugural season of a new FIA Champoinship for electrically powered cars, in which the Buenos Aires ePrix was first raced?
Buenos Aires ePrix: The Buenos Aires ePrix is an annual race of the single-seater, electrically powered Formula E championship, held in Buenos Aires, Argentina. Buenos Aires ePrix:  It was first raced in the 2014–15 season.
i don't know