If I used a fire extinguisher along with a chair with wheels would I be able to travel far? Would I go double the distance with two? Could I tie so many fire extinguishers to the same chair that I can make it a rocket Fire Extinguishing chair?

Tip: use a Co2 type fire extinguisher; not the more common ABC "dry chemical" type. The CO2 fire extinguishers contain higher pressure.

Why haven't the Mythbusters tested this? This could amount to some pretty funny rockets attached to Buster in a chair. Has great Mythbusting potential.

Well, they did something similar with leaf blowers.

I guess there isn't really a myth here.

Maybe they don't want to give some idiot any ideas for no real scientific reason?