Of course there is no sound in space but the player is not gonna think that they’re gonna think the game has no sound effects. You see how explosions in space make dull “boom” sound effect in movies even though that would be impossible to hear. They do it because it’s cool. Imagine how much cooler the overdrive would have been if you made the jet engine go “shooooooooooooooooooooooo” when you use it you know what I mean.