Nerd carriage?
Surely to be an actual Nerd Carriage, in order to be able to get a ticket you should need to do at least four of:
1) Write a quick "Hello World" in at least three languages, at least one of which should be generally regarded as "niche" and/or obscure.
2) Name at least three characters from Escaflowne.
3) Deliver a plot synopsis of Star Wars in under 2 minutes (not by leaving stuff out, just by talking very quickly).
4) Explain the difference between "dwarfs" and "dwarves".
5) Present your smartphone with NFC capability and refuse to pay with it on security grounds.
6) Name every Marvel film considered canon in reverse order of release date.
etc.