

Nah, you could definitely make one. Ensure the petrol is completely aerosolized, so that it burns completely and quickly. Now it just needs to be able to burn oxygen out of a room faster than it can get in. Or it could use the burning petrol to generate coumpounds and co2 to suffocate the fire. Get yourself basically a petrol powered weedeater and replace the rope with some sort of heat dissipater. As it spin its shoots the heat elsewhere, somewhere safer.
If an extra $20k isnt worth jail time to you, you aint broke lol