I recently saw a lotus elise in the air and i noticed that the rear under tray has some slits cut into it for airflow into the engine. The Telsa roadster doesn't have this and has a sealed under tray. The slits would add additional cooling to the motor which is located just above. I wonder why Tesla changed the under tray or if they even knew that the Elise had cutouts for air flow? Has anyone swapped out the under trays to see if motor and pem temps were improved?