Use "redline" in a sentence

1. Travers deliberately left the throttle up causing the engine to scream and the plane vibrate badly as the airspeed needle crept 20 knots past the redline to quiver at 148

2. Writer’s on the Edge Festival for his play, The Redline

3. The Kierdan armada was now in sight on the horizon, and must have started running their engines at redline, as they were now slowly drawing closer