one of the cool insurgent made fighting vehicles as well, (and the original is still preserved pic related).

It was nicknamed Kubuś and was outfitted with light machine gun, a british PIAT and had a flamethrower installed by insurgents. they built this thing under the noses of German occupation and rolled it into the fighting. it participated in two succesful actions during the Uprising and was then abandoned. which is why its still in decent shape today.