Looking at the promo video... This thing weights less than 500 pounds, guaranteed.
No to mention there was no actual driver in it.
Apparently the thing used in the flying video was a "different car" to the actual car that drives.
Please show us the math on wheels and tires and battery and electric motor that would make a car go 0 to 60 in 0.8 seconds and weighs under 500 pounds.
~1700KG with 600L of nitrogen gas at 10,000 PSI
If you do the math that gets you about 13 seconds of hovering.
https://www.youtube.com/watch?v=22rvpUecLts