Supersonic (D20 Modern Feat)
From D&D Wiki
The character zips off through the air like a mini-jet.
Benefit: As a special use of the Power (flight) skill you may, as a full-round action, move at 5x times your normal flight speed, provided that you move in a straight line and succeed a power skill check of DC 25. In addition, this feat grants the player the ability to fly for twice the duration as normal.
Special: Passing DCs 35, 45, and 55 give the character a +10 feet (cumulative) boost to their flight speed for the next 5 rounds.