Few more videos:
I made my own drag evaluation comparison to EQS model VS EQXX
https://youtu.be/eist2CeXifM
I am sure there many other details also that make it little bit lower than the EQS like the narrower rear track has impact, but thats tricky to estimate how it actually effects as its not visible to the eye so easily without seeing the car in person.
Rough specs
Cd 0,1716
Weigth 1,750kg
Wheelbase 2800mm
Ground clearance about 130mm
Length 4630mm
Tires 185/55R20
max engine power 150kW
Range 1000km
Some of the mods there can be done to all cars pretty easily. That front wheel rear venting is one of them which has actually quite big impact. I havent seen rear venting yet at the rear tires. That was just my first impression that there was holes where air would come out, but not visible in any videos yet is it there or not.