Nebular Plow?

[Strider]

I never used it much, but I think once you push it out of the way, it stays there and thus creates a clear corridor between the two systems you use it. (?)

[Phoenix-D]

Until you run through the nebula in another direction, yeah.

[Combat Wombat]

Remember you lose points when you use the nebula plow because you are destroying the enviroment

[Psitticine]

The plow can speed your initial trip, but there's only so much nebular matter it can push out of the way without slowing down. Thin bits will be plowed through quickly, but when you are going through thicker bits, you'll still slow down. Of course, the trip back along the same path will always be full speed (unless you have plowed something back across the path again.)