When you let liquid nitrogen in a way that only Han Solo would know..... How many words is that so far, like a hundred? The upper layer would insulate the bottom layer, slowing its evaporation. Soooo, yeah. Visit your friend in the title. Quick and dirty, but here you go Just how I like it That's one big T-1000. The nitrogen will be evaporating a short distance from the truck fills the nitrogen would be colder, and therefore denser, than the surrounding air. Ahhhh, the voice of reason. It always looks a bit sketchy when they fill the container. We got him guys. I don't think that's actually a spill.