The video goes against my intuition for how much performance you can get out of cold gas thrusters. I wonder if someone could do some back of the envelope maths on how much thrust and impulse you can get from a setup like this?

My primary scepticism is how much the prototype weighs, and whether it can still jump with 2 passengers + 1000kg of batteries inside.

Based on the statement that the suction fan generates 2g of downforce, and the telemetry showing the fan operating at 4,700 kg @ ~95% load, the Tesla Roadster weighs approximately 2,300 to 2,500 kg.