Mystic pulls it off very well, and never resorts to the cars dancing (and Hunny Hunt doesn’t either for the record, in the Heffalump room the cars just crisscross the room for one vignette to another).
It knows that the big strength of the tech is the ability to have the cars pull up together in the same space to see a scene, then be able to shift to fill any space (whether it’s a straight line, a U, a circle, etc.) all while being able to take slightly different paths for that to happen.
Cars dancing is fun for a flat ride (see Luigi) or a one off scene (see Runaway Railway), but when you do it for three scenes in a row at 1-2 minutes a piece, it gets a little tiring. Especially when the RV’s are obnoxiously sized and in packs of six, meaning that the spaces have to be obnoxiously huge to accommodate them.