FXX-K thoughts?

I’ve had the Bugatti SS for a while now. Finally got enough to get either the Agera or the FXX-K…

I’m really tempted to just go for the FXX-K even though the Agera is much more usable.

Is there a reason nobody mentions the FXX-K? It’s a special car outside of the game yet nobody seems to be driving it in game?

Thanks in advance!