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?
2014–15 Formula E season The 2014–15 FIA Formula E season was the inaugural season of a new FIA championship for electrically powered cars. It began on 13 September 2014 at Beijing in China and finished on 28 June 2015 in London after eleven races. Nelson Piquet Jr. came first in the overall standings, and so became the first ever Formula E champion.
1955 Formula One season The 1955 Formula One season was the ninth season of FIA Formula One motor racing. It featured the 1955 World Championship of Drivers, which commenced on 16 January 1955 and ended on September 11 after seven races. Juan Manuel Fangio won his second consecutive World Championship title in a season that was curtailed by tragedies.