From my perspective, this could serve as a decent proof of concept for building cheap, barebones tunnels (the tunnel for this project is literally just a concre

From my perspective, this could serve as a decent proof of concept for building cheap, barebones tunnels (the tunnel for this project is literally just a concrete lined tunnel with lighting - no additional costs like laying tracks, providing electrical third rails for the trains, etc) that self-driving vehicles can easily use. If this works well enough for something like a car-sized, self-driving, self-powered vehicle, I could see it being scaled up to use bus- or train-sized vehicles, while still utilizing the cheap, barebones tunnels.