Here’s an idea for an invisible train…
The Japanese are at the forefront of tryig to develop technologies of opticl disturbance…in Star Trek, these would be called cloaking devices. It is literally the stuff of science-fiction, at the moment.
In practical terms, their most successful efforts are based on reflective surfaces and stealth geometry.
This is a computer generated image of an invisible train.
I guess they would tidy up the interface between track and carriage. All those boxes need hiding.
Personally, I like looking at trains. Making them invisible seems a bit pointless.
Still it does look pretty cool.