Guys builds Tiger Tank
http://gizmodo.com/375333/guy-builds-nazi-tiger-tank-invades-michigan
(builds it half size 
)
This Tiger has a scuba-tank-powered cannon instead of terrifying 8.8 cm KwK 36 L/56 cannon that could take out Shermans and Churchills IVs from up to a mile away (1,600 meters.) The armor in this half-sized version, however, it much lighter than the original model, which was able to withstand a direct impact of the 76.2 mm gun of the mighty Soviet T-34 tank, at any range. The mini-Tiger would probably not be able to stand the impact of a beer can. Still, we would love to give it a spin.