Ok, regarding the train thing, I know it's a meme, but trains are fucking cool. The extremely low friction coefficient between the steel wheels and the steel tracks, which are designed for minimal contact between the polished surfaces, makes it so that an average human can literally drag a train car weighing many times that of the person. Like, that's the entire fun of trains and why we decided as humans it was worth it to lay hundreds of thousands of kilometers of steel rails, and why train freight is so fucking good and efficient compared to trucks.