[ yeah, she's stopping this around car twelve, thank you. As they pass through the door, she reaches out and grabs a fistful of the back of his shirt, hopefully stopping him from walking further. She's pretty strong, but she also weighs, like, 80 pounds, so who knows... ]

All right, all right, that's enough. [ after a second, she releases him, her eyes narrowed in suspicion (not directed at him for the first time in this conversation.) ] So we're stuck on an infinite train. There still must be something powering it - a Chaos Emerald or something.