I checked Gale's Books & Authors database and found this description of Arthur Hailey's Wheels, which mentions the Orion car model:
As in his previous insider's look in Airport and Hotel, the author's subject is the complex working of the auto industry from the boardroom to the shopfloor, and the car dealer's showroom to the home life of the auto executives. The narrative concerns the launch of a new model, the Orion, which provides the occasion for an expose on the inner workings of the industry, including shady dealings, mafia involvement, worker corruption, and marital transgressions. A large cast, centered by a young senior executive Adam Trenton, and his unhappy and disturbed wife Erica illustrate the complexity of the auto industry.
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