Of course he could! Time And Relative [there's a pause while she thinks of the rest she knows she was told but sometimes the doctor talks a lot and it's all blah blah blah, oh, right -- ] Dimensions In Space. TARDIS. That's the whole point. [Actually no it's still mising the "Transdimensional" part, but shh] And it's bigger on the inside so I don't see why he couldn't help more people get home. Kind of an exciting trip through space.

[If only it were a red double decker bus of a TARDIS that would be appropriate for this mission]