You know how the giant screen in T2/3D has a hidden door that opens and closes super-quick to let the motorcycle through at the last moment? The arms will be involved in the next-gen evolution of that effect, with a dome screen, the door on Kukas, and you on the motorcycle. ;-)
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I'm not even sure that's new.
And if I'm correct, the vehicles themselves don't spin 360 (like Cat in the Hat or MIB). It's the motion base turntable they lock into during the dome section that does the spinning. Just like Primevil Whirl is a "spinning coaster" but Mummy is a coaster with a mid-course turntable that spins the RV 180 degrees...