There’s no rhyme or reason to the three story tall Ponginator. It simply exists because it must. Humans must have a gigantic robot that shoots ping pong balls at speeds of 170mph. Inventor, Vernon Graner built this monstrosity together with the Austin Robot Group. It is capable of standing three-stories tall thanks to the attached bucket lift.

This bot makes people crazy. Insane people actually request to be hit by the pingpong ball projectiles that it hurls. This ping-pong shooting King Kong robot was made to promote to the Austin Robot Group and to get people asking questions about robotics in general. It has worked. Because I need to ask how the hell you survive this thing if it goes rogue and pelts you with like 200 balls. Check out a video of the Ponginator in action below.

30 year-old Philadelphia guy Vin Marshall and nine of his friends built this 2,000-pound replica tank from junkyard parts, complete with a functioning pneumatic cannon that fires hot dogs. Believe it or not it moves using pedal power. It has enough room to fit hardware for six peddlers and yield about 1.5 horsepower.

Problem is that’s not enough to move tank treads, so they decided to use wheels instead. Then they gave it bicycle-like gearing to get more power from less exertion. When parade day arrived it all worked out and they were able to move along at 15 mph with a full load. It cost about $3000 to build. Why pink? I have no idea. Maybe because it fits the whole hot dog theme. I didn’t see any specs on how many dogs per minute it fires, but just the fact that it does it is impressive. Check out a video below.

It’s bound to be controversial, because the dreaded “Stem Cells” have been mentioned, but this gun could be a great life saver on the battlefield. Or if you get cut up battling aliens and the like. Or if you are a cutter like Amy Winehouse, you could spray it on everytime you leave the house.

The Armed Forces Institute for Regenerative Medicine has officially invested $250 million in the project. With the help of this gun, gaping wounds could heal in a matter of just hours, getting soldiers on their feet to fight again. It could save lives, money and time. It will be interesting to see what comes of this. Probably be applied to the face-lift industry somehow.