The government has already flubbed this, with a business-as-usual energy policy that does nothing new for EVs. So what's National's answer? Sadly, even worse. They're set a target for EV numbers which is barely more than business-as-usual projections (so, not really a target at all then), while their chief policy to drive uptake is to let EVs drive in bus lanes while exempting them from road user charges (that is, from paying for the damage they cause to the roads). Both policies obviously only work if EV numbers remain low - that is, if they are ineffective - while the bus lane proposal actually means slowing down public transport, which actively makes things worse.
This is not the policy of a party which is serious about reducing emissions and tackling climate change. But then, we already knew that about National, didn't we?