LMFAO, the university press office suggests burning chlorine compounds in street cars.
edit: I think I might be wrong. Here's Derek Lowe's commentary:
- "...This mixture spontaneously ignites under the decomposition conditions, but it does not thermally decompose the underlying liquid. Meanwhile, at the anode, the perchlorate gets oxidized to chlorate and chlorite ions, but none of that shows up in the gas phase."
https://www.science.org/content/blog-post/instant-flames-saf...