The Mystery Time Machine

In a parallel universe relative to the Daft Dimension, a version of the Doctor travelled in "The Mystery Time Machine" with alternate versions of Strax, Vastra, Jenny Flint and K9.

It closely resembled the TARDIS used by the Doctor of the Daft Dimension. (COMIC: )

Behind the scenes
The Mystery Time Machine is a parody of the Mystery Machine, the van owned by the characters of the Scooby-Doo franchise.