Well done pnegyesi! That's the girl, and the car, I had in mind. Miss Hanold was hired as eye candy for the car's introduction to the US press. Rumor has it some photographers rudely asked her to move aside, so they could get better shots of the car.
Her appearance at the NY Auto Show accounts for one of the "show girl" clues, above. Her biography includes much more than that auto show and her nudie pics in Playboy.
The daughter of a NY police detective, Marilyn went to secretarial school, and made a living as a secretary for a patent attorney, before becoming a Las Vegas chorus girl (the other "show girl" reference) in 1957. Marilyn moved to LA and was working as a showgirl at Frank Sennes' "Moulin Rouge" in Hollywood, California when she was spotted by a William Morris Agency representative for George Gobel's new stage production "Riviera Revue. Gobel gave her the singular task of bringing him his guitar during his act, calling her on stage by the name "Charley", because he was "too lazy to pronounce her whole name". Sometime between her move to Vegas and her Playboy appearance, she was the rumored to be the subject of one of pinup painter Gil Elvgren's works. She was the cover girl for the magazines Photo Life (USA) in February 1959 and Blighty Parade (UK) in January 1959.
After her stage career moved to the big and small screen, she appeared in some notable films. which included her appearance as a example of one of those "girls whose measurements make them beauty contest participants" in "The Brain That Wouldn't Die (1962)", a starring role as "Princess Marcuzan" in "Frankenstein Meets the Spacemonster (1965)" and a bit part in the mainstream film "In Like Flint (1967)". She also appeared on 60's TV stalwarts "Batman", "Bewitched" and others.
In 1967 she married oil tycoon Rulon Keaton Neilson. Neilson is founder and president of Skyline Oil Company, a Salt Lake City-based oil and gas exploration venture. He was almost 30 years her senior.
As I understand, the aforementioned Jaguar was a car of some renown.
http://www.youtube.com/watch?v=fejpK1VVzhk