Nood - Blender Car Physics Import - Desperate to find a working tutorial

Hello everybody,

I wanted to import a simple car (parent body with 4 wheels attached to it) to unreal, but it imports the whole thing without creating the hierarchy,

I found multiple outdated not working tutorials, I found many interesting things in the documentation including this

but it does not say how to import from blender a whole vehicle, keeping the hierarchy intact

can someone explain to me how it works with the recent (4.18) unreal version ?

thanks for your help