When Union transport minister Nitin Gadkari rode in the hydrogen-powered Toyota Mirai car to Parliament last month, it shocked not just the Parliamentarians around but also Indian automakers. Till a few years ago, electric vehicles used to be at the centre of every discussion around the clean technology of the future. With the government’s push to wean out internal combustion engines, the incentives and attraction for the lithium-ion-battery-powered engines had captured the imagination of automakers.