Some points:

Falling is not the same as flying

The car, by the looks of it, is probably just a very lightweight body with some thrusters and gyroscopes. Meaning, it's not a full car like we're used to, but rather just a plastic replica made specifically for this demo. Add some thrusters, make sure it looks ok. There you go.

Do we trust the company that pretended to have fully autonomous robots that were clearly being piloted backstage? The company that has lied about 'self-driving technology' for decades, which has already killed dozens of people because it's complete dogshit at what it does.

I don't feel inclined to believe them here either lol