简介：Host Mo Rocca shows us: The jet hoverboard that has five jet engines and flies over 100 mph as high as 9,000 feet. Then there is a 3D printer that is big enough to print a house and 3D printed homes can be built in a day. Besides, there is also a new food that is made from pond scum. And, let’s look back at the past when the world transitioned from horses to cars