Starting at 18:47 is a short 3 second clip of JSR where Combo is grinding on a rail in a sun lit level. I played JGR for hours back in the day and I don't remember any part of any level that looked like this with the tall buildings in a sun lit area. Is this some part of the first grind city level? Or is it maybe some kind of beta level not in the final game? I also don't remember the lens flair that is in this clip - but this doesn't look like JSRF imo, which I also played.

Sega Dreamcast - YouTube