Not related to engines but I recently came across a US Army use for gasoline that is sort of interesting: the USGI modular field kitchen (MFK).
Gasoline is used for kitchen cooking heat and lighting in an MFK. A bargain at $5k, reduced from $11k. It’s gotta be a fantastic deal for the right buyer who needs to dish up 750 meals a day and be gone in a week. Concert/festival promoter, remote logging/mineral exploration, seasonal recreation operator, etc.
Colemans.com surplus site:
U.S. G.I. Modular Field Kitchen Military | Colemans