This is Takabisha, the world's steepest roller coaster with a 141-foot drop at 121 degrees. That free fall will put your car at a whooping top speed of 100mph (160 km/h). This timelapse shows how they built it:

It must be quite amazing to scream for your life while not enjoying the beautiful Mount Fuji backdrop. [Takabisha (Japanese) via Fuji-Q TechCrunch]