Yes I did see that. I cannot remember the route it was installed in but it came and went with all the usual Tardis sound effects. As a Whovian myself, I found that it was most impressive.
I see three assets on the DLS:
<kuid:224131:101001> Dr Who tardis sound
<kuid:119493:1196> Dr. Who Tardis
<kuid:476307:100026> Tardis
And three for Dalek, counting the Eggliner. I am surprised Butler57 did not do a Tardis Eggliner!
<kuid2:13013:919215:2> Dalek -is listed as type Train
<kuid:13013:746064037> Dalek Horn Sound
<kuid:369756:102896> Eggliner - Dr Who - Dalek
i noticed it was included in the Timber Ridge line list of assets when i was revamping it, but I never actually saw the tardis and I spent about 8 months updating the route.
There is also Police Box 40, Kuid 209453:39006 by saxham_market, one of a series of police boxes created by him in November 2009. This is described as "Now you see it - now you don't" and includes a read me file describing how to add and synchronise sound effects. This has been downloaded 23,097 times.
That'd be because it's used on Healesville, although not saying where (yes, another Whovian here!). There's, all up, 4 easter eggs on the Healesville route in TANE/TRS19. Another is Doctor Who related (not counting the random passenger characters appearing ).
Well I knew it was the Police Box 40 in Healesville, and I added the Doctor and Colonel and also used them in other routes and sessions. Now you see him, and now you don't. But didn't know about the daleks, must investigate...