"Oh its very convenient. The Doctor has a TARDIS. Simply put, she's a time machine that allows for her occupants to travel through the heart of the time vortex itself.

Of course if you let a certain Timelord drive, you'll never know where you end up."

Another sip and a fond smile. River did miss the old girl terribly.That, and it was fun to show off to The Doctor just how much better she could drive the time machine then he could.