Okay, so it's just compressed air.
Easier.
But crappy specific impulse (less than 50 seconds).
Even assuming that 50% of the mass of the car is the compressed air, that gives you less than 10s of useful thrust (with thrust-to-weight ratio larger than 1.0). Probably more like 5 seconds, actually.
So the car must be an empty, lightweight shell containing big compressed air tanks.
Cute demo, but totally impractical.
But of course, you knew that.
Today we and @ForensicArchi publish an update to our ‘drift-backs’ platform, an interactive web-based map that archives and verifies over 2,000 cases of ‘drift-backs’ in the Aegean Sea: https://t.co/prTIE61uMt