Roger Miller worked in the family business for 28 years in different positions, said Linda Luchetti, a spokeswoman for the Larry H. Miller Group of Companies.
He worked mainly in technology, serving for many years as the chief technology officer. He developed the ticket kiosks at the Megaplex Theaters.
Luchetti said Roger Miller phased himself out of the day-to-day operations of the company in the last year to focus more on his passion of car racing.
In January, he and a co-driver finished 10th in the Grand-Am Continental Tire Sports Car Challenge Series at the Daytona International Speedway.
Family members say he also enjoyed camping, riding ATVs, scuba diving and skiing.
Information about a memorial has not yet been finalized, Luchetti said.