Formula E achieves a first with Buemi and driverless cars

FILE PHOTO - Formula E - FIA Formula E Hong Kong ePrix , Hong Kong - 9/10/16. Renault-eDAMS's Sebastien Buemi of Switzerland in action to win. REUTERS/Bobby Yip

BUENOS AIRES (Reuters) - Switzerland's Sebastien Buemi became the first driver to win three Formula E rounds in a row on Saturday with Argentine fans also witnessing another milestone with a 'race' between two driverless cars on the streets of Buenos Aires.

Buemi, the reigning champion and an ex-Formula One driver, has now won all three races this season for the Renault e.dams team with Buenos Aires following on from Hong Kong and Morocco.