Can fly at superluminal speeds by creating a slipstream

Cell had finally figured it out. It clearly took a lot more energy than Goku's comparatively effortless move, but it was better than nothing.

By stabilizing a toroidal wormhole around his body, the gauge bosons confining him to ordinary space were decoupled. The result was immediate superluminal flight in any direction he chose...identical, in fact, to the slipstream drive employed by all the ships in the Empire.

Cell did a few laps around Mars, flew through the rings of Saturn, then paused. Wordlessly, he took off, heading away from the solar system entirely.

- Bringer of Death Chapter 54