An underrated solution to many problems, like running out of space to add a 15th lane to a highway

a box on wheels which uses electromagnetism to move along a fixed track

Good question. Is a metro a train? Is a rollercoaster a train? The more you think, the less you know...

the one that goes vroom vroom
(Do Not trust me)

Metal noodle~!

Sometimes can be suplexed~!

That's really tough to conceptualize.

A underdeveloped little pile of essential infrastructure!