What do the drivers do in the custom decor editor?

I saw that in the menu for creating custom decor, there's a player icon. I tried to see what it does, but to my knowledge, it does nothing.

Also, another question. Is it possible to set the computer's location in a custom challenge? (btw it's a battle mode track)

Essentially, it's a decor in a track that rotates to be viewed at different angles (unlike most decors which are only able to be viewed from one angle, so it's useful for making something like a statue or an NPC). By the way, are you new here? Hi and welcome to MKPC I guess

thanks, I guess the buses are basically drivers if you give them a driver image
I'm new the forums, so you're basically right