Most of those likely cover up where the batteries would mount. Another video pointed out that the car sits tall due to a few inches between the seat and bottom of the sill. My buddies GT-350 and 500 had lots of them tooThat is a lot of undercarriage covers.
This guy is all over You tube https://www.youtube.com/@TylerPotterWhy does this guy look familiar? A TV show maybe? Roadkill? Great, except for the 8 minutes of just driving down the highway. I'm even MORE in love with it now.