Where is the cable car?

Hint 1 of 4:

It will appear once you've done everything that you need to do at the hub
site.

Hint 2 of 4:

In particular, you need to find Puck.

Hint 3 of 4:

Have you played the greeting messages on the computer yet?

Hint 4 of 4:

Look at the one from Wakefield.  (It's locker number 9.)