Warp drive is possible by folding space all around the ship using extremely strong magnetic fields. It requires a ship larger than a city. Warp drive is basic folding, however if you tesselate the warp field, and then cone out and spin the tessellation you can go from one end of the universe to the other instantly.
When travelling through warp you cannot smack into anything (it protects the speed of light because the smack would be faster than that). If you hit the edge of the universe you just bounce off.
The ships have to be a critical size (very massive bigger than a city) in order to establish a proper warp bubble with their drives.
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You must test the warp drive on a ship first with nobody in it. It can shake apart. The conned tesselation spinning has to be done properly.
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