Cops found burnt clothes, a fuel canister, a rucksack and notes in the car park.

Over there, a half-empty fuel canister.

Biff accidentally hits the button that sends the fuel canister hurtling off into space.

The entire fusion fuel canister would need to be enveloped by fission energy, to both compress and heat it, as with the booster charge in a boosted primary.

Many commercial stoves also require special fuel canisters, adding to overall stove weight.