F1 faces fundamental questions after Honda pullout

FILE PHOTO - F1 - Azerbaijan Grand Prix - Baku, Azerbaijan - June 24, 2017. Ferrari's Kimi Raikkonen (back) and McLaren-Honda's Fernando Alonso drive during the third practice session. REUTERS/David Mdzinarishvili

LONDON (Reuters) - Stefano Domenicali will have some fundamental questions to address when he takes over as Formula One chief executive in January, starting with the relevance of the sport to manufacturers in an increasingly electric age.

Honda's shock announcement on Friday that it will depart at the end of 2021 leaves the pinnacle of motorsport as a series with only three engine manufacturers and no sign of any newcomers.