Yeah, she tricked me at first and then after a video I realized how fluid the movements were and that the speech was too realistic. I thought how it worked was that someone played the game and then people programmed a Vocaloid voice to say all those things and animated her body.
Underground roads are crazy expensive. You need something to hold up the earth and anything else above it. There’s issues with water leaking in. Piping will have to go around it. If it breaks down somehow it will take longer to repair. It’s only really an option if the detour would be a lot longer or within urban areas for the extra space it frees up.