Welded parts can only be “move” or “tweened” with their other welded part if one of their CFrame gets updated. This wouldn’t work if you’re only setting their Position or Orientation.
That’s what I was doing, the latter. What are some other ways to attach the part to the car?
WeldConstraints? They are Weld but better.
Already tried it, but it didn’t work. The part just stayed in place where I added it, even if I was to unanchor it.
How about this, just do a test where you place two random parts, weld each other and update or tween one of their CFrame.