4 ms·Just power it with compressed air.by murbard2 9y agoJust power it with compressed air.tintor 9y agoExpending air is not sustainable. Maybe make it magnetic and roll it on the exterior hull.murbard2 9y agoWon't work in space.mentat 9y agoMagnetism doesn't work in space?murbard2 9y agoaway from the hull