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The fiberglass model known as XP-715 made its debut in April 1960, marking a significant milestone in the evolution of the '63 Buick Riviera. This model represented a pivotal phase in GM's design initiative, serving as part of an advanced program aimed at crafting a new fastback coupe.
During its unveiling in February 1960, the XP-715 model was subjected to a comprehensive management review at the Design Dome. Initially conceived as a four-passenger Cadillac, this prototype eventually transitioned into the iconic '63 Riviera under the Buick brand.
Reflecting on its origins, one may ponder whether the designers foresaw the XP-715's eventual status as an emblematic symbol of American automotive design.