Thanks to my good friend, Galactrix, I am sitting on two Cantina codes for the Prinawe Junction. Since the number of times these can be shared is much greater than for the Congregates, I am just going to post them:
To redeem them, simply log onto www.swtor.com, then click one of the above links, or copy and paste into your browser address bar. You will also be given a new code to share with 50 of your closest SWTOR-playing friends. Then the next time you log onto the game client itself, the speeder and an extra surprise will be wating in your mail. Every character on the account will get one. Good luck, and if you are unable to redeem the code, let me know so I can edit the post.
Source: I Have Touched The Sky More Speeder Keys: Prinawe Junction