Generate an 8-10 second video prompt centered on a cliffside speeder chase. Build it as a reusable video brief with three concrete beats: open by establishing the cliff city, the lead speeder, and the dangerous route edge; move into a fast pursuit through bridges, narrow streets, or canyon gaps with a readable long-take camera flow; end on a stable final frame where the speeder and cliffside setting remain recognizable. Prioritize readable motion: define the chase route, speed ramp, camera distance, safety boundaries, foreground blur, and final frame. Specify pacing, lens feel, camera distance, lighting, motion blur, and continuity rules so the output stays legible. Keep the vehicle, route, props, location, text, and logos editable. Avoid real brand names, celebrity references, fixed IP, readable signage that cannot be changed, unsafe real-world instructions, sudden teleport cuts, inconsistent scale, warped anatomy, and unrelated extra scenes.