Talk:Joy Ride/@comment-24865235-20150327124910/@comment-25021853-20150327140510

I think it's mainly there to cushion the occupant against impacts. Air compresses much easier than water, and a sense, viscous but breathable fluid would still allow movement, but cushion and dissipate any rapid motion or shocks and thus protect the occupant, especially if it crash lands, as it did before it was found. It also seems to allow Steven to breathe, as he is in it for awhile and not only talks but doesn't seem to be in desperate need of breath.

Then again, as Steven is getting older and better at using his Gem, he may be exhibiting not only super strength, but increased reflexes, durability, and ability to go without breathing for long periods of time.