Generate an 8-10 second video prompt for a handheld phone video where a vehicle unfolds into a mecha-style reveal. Build it as a reusable video brief with three concrete beats: open with an ordinary vehicle, real-world setting, and phone-camera viewpoint; move into the mechanical unfold, armor shift, or light-up reveal with a clear handheld camera path; end on a stable hero frame that can work for a landing page preview, product showcase, or social cutdown. Specify pacing, lens feel, camera distance, lighting, motion blur, and continuity rules so the output stays readable. Keep all subjects, props, locations, text, and logos editable. Avoid real brand names, celebrity references, fixed IP, readable signage that cannot be changed, unsafe action, sudden teleport cuts, inconsistent scale, warped anatomy, and unrelated extra scenes.