What began as a straightforward theme‑park commission turned into a public creative rupture halfway through production. Universal Studios wanted the new simulator to sport a "classical animation" look — full, feature‑quality turns on Hanna‑Barbera's familiar faces — and Bob Kurtz and his studio, Kurtz & Friends, had originally been hired (they were already contributing sequences for Jetsons: The Movie). Midway through the ride film's production Kurtz and his company resigned, officially citing "creative differences." The departure was abrupt enough that Universal was forced to pivot quickly: Sullivan Bluth Studios was brought in to take over character animation duties, with David J. Steinberg stepping in as animation director in place of Kurtz. Rhythm & Hues, deGraf/Wahrman and others were plugged into the remaining CG tasks to keep the schedule on track for the attraction's June 7, 1990 opening.
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