Where is the Secret Hologram Room in TTR?

I played Tag Team Racing alot when I was a little kid. Even though I played that game endlessly, my memory of it has gotten very hazy over the years. One memory that hasn't faded, though, is this bizarre room that you would access by warping from some hidden warp pad somewhere in the overworld.

The room itself was somewhat spherical, though you walked on a flat plane. There were some large windows that either let you see the whole park or just the sky. There were also a few bumps that looked like they'd function like tables surround by smaller blue dots that looked like they'd function as chairs. Inside it you would get a hologram message from Cortex, I believe. After you finished, you could wander around the room for as long as you wanted, and to exit you'd have to hop back on a warp pad.

This was my favorite room when to explore when I was little. Eventually, though, I stopped caring about the game until about a year ago when I found out that I still have all the PS2 games I had as a kid. I've played with TTR a bit and really want to visit this room again, but I have been unable to find either trough normal gameplay or in any walthoughs/longplays I've seen. Can someone tell me where this area is in game? It would mean alot!

I concede that my memories of this room may have been meshed together with other memories of things I enjoyed as a kid. But the room itself is so vivid to me that I'm 90% sure that it exists.