The X-12: The Incredible Idea for A Nuclear Train
![](https://i.ytimg.com/vi/4JLz_U0KcNY/mqdefault.jpg)
20:43
Five Weird Nuclear Powered Machines
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17:30
Typhoon Class Submarine: The Largest Submarine Ever Built - Megaprojects
![](https://i.ytimg.com/vi/V02OSDgghUg/mqdefault.jpg)
19:00
The LNER Class A4: The Fastest Steam Locomotive Ever
![](https://i.ytimg.com/vi/swlVkYVSlIE/mqdefault.jpg)
44:21
REVEALED: This System KILLS in 39 Seconds and Nothing is Being DONE!
![](https://i.ytimg.com/vi/Rdj5-6t6QI8/mqdefault.jpg)
27:20
Why Don’t Railroads Need Expansion Joints?
![](https://i.ytimg.com/vi/-2CnCrz38F4/mqdefault.jpg)
31:45
This is The World's Most Complex Construction Project
![](https://i.ytimg.com/vi/JpBitYGLe9E/mqdefault.jpg)
16:44
Megaprojects of the Future
![](https://i.ytimg.com/vi/eZ2ZzjVNG1M/mqdefault.jpg)
19:34