Rquirements: 1 two person rocket mount + Sober driver to fly you around Northrend
Basically, you can get a port to Dal at level 1 or 2ish depends if you ding on discovery yet, and get your friend to fly you around Northrend and gain discovery experience + the Explorer achievements.
It's only worth it up to level 15 or so, then the exp leveling amounts are 15,000+ experience per level or what not.
Semi-pointless, unless you have a bot or something to dual box you all through northrend, then this would be kinda nifty (like for RAF, you can get to level 15 or so to enter instances quicker.)