Dumping Out Fuel Tanks

[Roomba]

I think this is a good idea. The last time it was proposed, the chief argument against it was that it made chemthrowers too easy to assemble surreptitiously, but I'm not really buying it, because it saves 10-15 seconds at most and it really isn't hard to find a secluded spot to spray fuel smoke in the air. I know some things are meant to be artificially difficult but this is probably one area that doesn't benefit from it.