Oh this is intense.
You know how on occasion you see a REALLY BIG jet fly overhead? As in passenger jet? There's a bit of speculation as to if you can jack one of these.
You can.
In the Las venturas airport, on the southern end, right next to the end of the runway, there's a REALLY BIG hangar. The door opens by sinking into the ground, so it's easy to miss it if you drive by it.
Inside is one of these jets, and a ramp to get to the door. Then you have to CAREFULLY back it out of the hangar and get it lined up on the runway (the wings are so wide they overlap the sides, and will hit things if you're not centered.)
Then fly like you would normally... well, OK, it's big and takes forever to turn, so you'd better be good lining it up for approach/landing. Also, make sure you taxi it it to one of the air-stairs, and line the doorway up with them, because if you don't, you won't be able to get back in!
If you purchase a ticket at the airport, you get on one of these as a passenger... you can either skip to the end of the flight, or once you reach cruising altitude, jump out and go skydiving.