The Doctor has come to learn that he is very bad at gift giving. Nonetheless, this small package is sent to Lorna's home.
Inside the package is a key and a note that says:
Happy Birthday, Lorna!
Couldn't quite figure out what to get you, but I hope this will do.
Hope to see you again.
Love,
The Doctor
PS: You should probably look outside.
And outside is this:
It may or may not have a modified engine that may or may not last longer and run faster than any modern car.