While playing with JSRS enabled, my friend and i have realised that only the driver can hear the engine sounds. the passenger only hears the wheels and whatever terrian we are currently driving on.

Also, when all wheels are no longer making contact with the ground, that is when the passenger will hear a quick second of the engine, but then shortly after, it'll go back to silence.

I was wondering what would cause this? We aren't playing with ACE3, RHS, CUP. or any other sound mods besides "Enhanced Soundscapes"