Summary: Another day, another new temporary companion.
“So you zoom around space in this?”
“Well, I wouldn’t say ‘zoom’ exactly.” The Doctor considered that for a moment. “Or maybe I would. Zoom. Has a nice ring to it. Zooooooom! Yes, I do that.”
“But how? I mean, aren’t spaceships supposed to be… I don’t know, metal and stuff? This is a wooden box. Wouldn’t all the air leak out?”
“Oh no, there’s a forcefield around it, sort of an atmospheric bubble. The air can’t escape; there’s nowhere for it to go.”
“A forcefield? That is so cool!”
“Isn’t it?” The Doctor bounced. “So, fancy taking a trip?”