Live composite preview, on the photographer
The guest saw the souvenir before the shutter fired. Each event shipped overlay artwork as a bitmap — driver cutout, event banner, and a grey window where live video appears. The engine combined the camera's live feed into that window on every frame, up to 30 per second, on the wearable. The archive still holds the proof: a Bobby Labonte overlay from the NASCAR UAW/GM Quality 500 at Lowe's Motor Speedway (October 8, 2000) and the prototype screenshot compositing live video behind it.