Ultra-pure drivetrain sound recording of a Tesla Model S Plaid in a vacuum-sealed anechoic chamber (air pressure < 0.1 Pa) with the vehicle suspended on magnetic levitation bearings. The drivetrain operates at 120 km/h equivalent motor speed (18,000 rpm), emphasizing the 1700-1800 Hz fundamental harmonic (±5 Hz tolerance) and its 3rd overtone at 5100 Hz. Explicitly exclude all non-drivetrain noise: no tire contact, wind resistance, or structural vibrations.