If you fly a prop job with a decent bit of power, the prop tips can generate these same condensation trails - again, it comes from enough of a pressure differential to pull the moisture out of the air. I've seen it plenty flying behind a Russian M-14P, I think the lowest HP engine I've seen pulling a "genie," as we call them, is 200 HP. Might be possible on a smaller engine in extreme moisture? I donno.. but it looks cool!
I never had the horsepower to make trails like that - it'd only make about one complete spiral on 375 HP.