A cool feature on every Koenigsegg in existence is its hardtop detachable roof. However in Forza Horizon 5, no Koenigsegg roof is detachable. I propose that with the push of the left joystick, the screen goes blank like it does with the Porsche 911 Speedster and the roof comes off making it a roadster.
Koenigsegg Regera
Note it has no roof. This should definitely be a feature for Koenigseggs on FH5.