Just like in the Trailer.
Immagine you drive a Mustang street version, go offroad and swap to the offroad kit on the fly without stopping or "changing car"
I would LOVE this, if this is possible to make ?

And i dont know programming or modding but i gess if its possible its more easy to implement in Openworld,
BUT maybe add that we can also change during races. (a bit how TC2 did it in the world bending races)