"Oh no, not that sort of oil!" Tamaki shook his head. "Not...um...animal oil. Black oil. You know, it's slick and smells horrible? It's very valuable in my world, we use it for so much! But there's only so much of it." Or something like that. Global issues weren't exactly Tamaki's strong suit.

"We haven't had wagons pulled by animals in centuries!" he exclaimed. "And we use electricity for light. Like in the hospital." He pointed back to the building. "And engine's a...it's a big block of metal with things in it that makes things go."