And Q had managed to get the Doctor not once, but four separate times. Which is why the Doctor was so worried. The amount of energy alone needed to hold that level of paradox in place for any sustainable amount of time was immense. And that was without complicating it with the multiple TARDISes.

The Doctor nodded. "But here aboard the ship? They're able to keep you fuelled properly?"

He was still worried about his Old Girl, but KITT's assurance had helped him to refocus on the bigger picture.