
http://www.orbithangar.com/searchid.php?ID=2422
And here another one that seems to work like the one above but with a different purpose.
http://www.orbithangar.com/searchid.php?ID=1396
It's amazing how Orbiter is expanding given that it's only freeware. I use the warp drive all the time and it's fun to be able to zoom past Jupiter and then Neptune in no time.