An excerpt from a British blog regarding the need to rent occasionally for long journeys:
"For those who rarely go far, EVs like the Leaf will also be ideal. For the rare occasions when trips beyond the range are contemplated, Nissan has already said it will work with rental companies to offer favourable rates for a long-distance conventionalmobile."
So who knows if the same will hold true here, where multi-vehicle ownership is more common. But negotiated rental rates would be one less headache for the single-car Leafer.