The video starts during Lap 3. At 0:05, the HUD shows 'LAP 3' completed with a time of '1:56.03' and 'LAST LAP: 1:49.85' (which would be Lap 2). The HUD then resets for 'LAP 4'. Lap 4 runs from 0:05 to 1:55, at which point the HUD displays 'LAP TIME: 1:49.37' and 'TODAY'S BEST: 1:49.37'. This confirms 1:49.37 as the fastest complete lap shown in the video. The track name 'Phillip Island Grand Prix Circuit' is explicitly mentioned in the video description and visually confirmed by the track map on the HUD. The vehicle 'Porsche 981 GT4' is from the video title. The session type is inferred as 'track_day' from the description 'Second time on track'.