By my understanding of the talent, Full Throttle does not actually increase the current speed of the ship. It only increase the ship's potential by 1 for a number of rounds equal to your Cunning.
So you wait until you've maxed your normal speed. Then you have to spend a round activating the talent. Then your next action the following round to raise your speed to the new, temporary limit? Which then falls off after the round ends. So with an average Cunning (2), you get the benefit of the increased speed for only a single round?
Is this how it is supposed to work?
Did Admiral Akbar write this talent?...