Simple, straightforward, and speedy. Would be nice to be able to see out of the sides but perhaps it's to hide jankiness from the speed.
I'm not sure about the advertized 990 Km/h, though... It took me about 6 seconds to go 250 meters and 16 to go 400. I also would love configurable speeds. But overall really solid and with nice textures.
The 900 km/h comes from an article about a real Hyperloop project.
I don't want to disappoint you, but there is no movement in the game. :)
Players will be teleported to the destination station after a few seconds. This produces less server lag than quick moves. This means there is no real speed limit in the game, but the trip has to take a few seconds to accelerate and decelerate, also to create the illusion of movement.
The longer the distance, the higher the speed. A trip lasts a maximum of 32 seconds. With a distance of 64 km (once across the whole map) 2 km/s or 120/min or 7200 km/h are reached!