Well I see no numbers saying how long it will fly. Perhaps it "hops", could easily see that happening with a burst of air below the car. (While standing still, accelerating the car upwards for 1 second with a burst of air)
https://x.com/tesla/status/2110913438293647789/video/1
Looks like 4 seconds or so.
This is not flying, it's a semi-controlled crash landing.