Hello everyone!

So, I'm making a datapack at the moment that involves a custom gui using a minecart, but currently it's just a minecart chest hovering in your face with a menu inside. I was just wondering if I could get any help with a way to make the minecart invisible. I thought I had done it before - using the Invisible:1b tag, but that doesn't and possibly hasn't ever worked, so if you have any suggestions please comment them so I can get on with making this datapack.