Speaking at the Tokyo Motor Show, Ghosn said he didn’t regret the investment the Alliance had made in electric vehicles, despite pushing back its 1.5-million sales target two or three years beyond the original March 2017 deadline, news agency Reuters has reported.

‘Frankly, I don't know how they are going to do it, because knowing all the problems we have, to have a charging system with electricity, where is the hydrogen infrastructure?’ he said. ‘That's why we have postponed, in a certain way, some of our ambitions in terms of fuel cells.’

The Renault-Nissan Alliance is part of a collaborative agreement with Daimler and Ford, formed in January 2013, which had been targeting a production fuel cell vehicle in 2017. Ghosn has yet to indicate how far this has been postponed.