Mekgineer's Chopper

one minute? Just for the fun of it, let's do the math. It takes about 5 minutes (just a rough estimate) to go from Shadowmoon Valley to Netherstorm on an Epic flyer. Because you will need to travel on land, I will double the effective speed of Epic flying mounts for this calculation. 380% x 2 = 760% running speed 59061% running speed / 760% = 77.7 times faster 5 minutes x 60 = 300 seconds. 300 seconds / 77.7 = 3.9 seconds. Now THAT is speed.

You can also have one person ride with you in the side car

Thortok's guide to getting a Mekgineer's Chopper!

Chopper. Two passenger mount. People in your group can ride in your side car. Don't have to be an engineer to have and use one. Do have to be an engineer to make one. Don't have to own one to ride in someone else's. Gives an achievement to have it: Get to the Choppa!.

1. 
   
2. (Engineers Only) Get to 450 Engineering.
3. 
   
4. (Engineers Only) Buy (and learn) [item=44503]. This requires [faction=1037] Exalted. Easiest way to get this rep to Exalted is to do heroic dungeons at level 80 without wearing one of the tabards that changes the default rep into a different rep. You can also quest for it.
5. 
   
6. Gather 12x Titansteel Bar, 40x Handful of Cobalt Bolts, 2x Arctic Fur. Hopefully you can figure out how to do this on your own.
7. 
   
8. Save up 12500 gold or the following items: Salvaged Iron Golem Parts will cost 3000 gold. 8x Goblin-Machined Piston will cost 1000 gold each for a total of 8000 gold. Elementium-Plated Exhaust Pipe will cost 1500 gold. Finding any of these mats for cheaper than the listed price on the Auction House is unlikely, but possible*, so make sure you check because it could save you money. Obviously, don't buy them for more than the listed price. Duh.
9. 
   
10. The parts listed in Step 4 can only be bought from [npc=31247] in K3 by an Engineer who has completed Step 2. So if you are not an Engineer, you will have to give your gold to the Engineer making this for you, and they can buy them from the NPC.** (Note that Elementium-Plated Exhaust Pipe, the part that costs 1500 gold, is limited supply so has a chance of not being available. However, because of the rarity of choppers anyway, it is usually available regardless. If the Engineer says it's not available, take their word for it and try again in a couple hours or the next day.)
11. 
    
12. The mats from Steps 4/5 and Step 3 will be used to make the chopper. If, more than likely, you are at K3 when you have collected your final mats, there is an anvil within K3 the chopper can be made at.
13. 
    

*The mats in Steps 4/5 used to be additionally available from deconstructing (the Engineering version of Skinning) certain bosses in Ulduar, specifically Flame Leviathan as the most common. Not sure which patch changed this, but this is no longer the case. Now that Roxi Ramrocket is the only source of these mats, you will practically never see them on the Auction House anymore. However, since these mats are bought from a vendor, the guild perk [spell=83964] can be used for a discount. No other forms of discounts are currently known. If you do not have this perk, you can check the Auction House to see if someone who does is selling at a discount. Since it could potentially save you money, why not check?

**Make sure you protect yourself! If you get scammed, GM's can and will take action to get your gold and/or mats back, just open a ticket. In order for them to confirm it was a scam, make sure the entire transaction is negotiated using in-game text chat so the GM can read the chat log and confirm that you have been scammed. (Hopefully this won't happen anyway, but 12.5k is a respectable chunk of money, so make sure to cover your bases.) This 'scam protection' is provided for all forms of scams, including the 'give you the mats to make an item and you keep them and give me nothing' scam, as scamming is against the ToS!

I recommend, for Engineers making this for yourself, after you make your first one, check your realm to see if there's anyone willing to buy this for extremely high prices (like, 20k or higher, perhaps even 30k). If you get enough profit, make another one and attempt to sell it. Keep going until you don't get any buyers for awhile, making and selling one by one, and then if you go a long time and can't sell your current one for a profit, THEN learn it yourself.