The car, a gold and white sport coupe with four miles on its odometer, was buried part of Tulsa's "Tulsarama" Golden Jubilee Week festivities celebrating Oklahoma's 50th year of statehood.

[8][9][10] After stabilization[11] and ten years in storage, the Plymouth was accepted by the Historic Auto Attractions Museum in Roscoe, Illinois[7][12] where it remains on display as of 2025, largely unrestored.

As part of the city of Tulsa's "Tulsarama" Golden Jubilee Week festivities celebrating Oklahoma's 50th year of statehood, it was decided to bury, in an underground vault, a new desert gold and sand dune white two-tone 1957 Plymouth Belvedere sport coupe.

When asked why the 1957 Plymouth Belvedere was chosen, event chairman Lewis Roberts Sr. was quoted that the car represented "an advanced product of American industrial ingenuity with the kind of lasting appeal that will still be in style 50 years from now.

A partial list of items included a five-gallon container of gasoline, a case of motor oil, a case of Schlitz beer and items that were considered typical contents of a woman's purse, which included a bottle of tranquilizers, an unpaid parking ticket, 14 bobby pins, a compact, cigarettes and matches, two combs, a tube of lipstick, a package of gum, a plastic rain hat, pocket facial tissues, and $2.73 in bills and coins.

[22] Miss Belvedere was placed on a steel skid with her tires off the ground and the vehicle was lowered into the vault a number of times for publicity photos to be taken.

[24] In 1997 there were some people expecting that the car would be unearthed due to the inscription on the marker which read "Golden Jubilee, Inc. Time Capsule with 1957 Plymouth To Be Opened in 2007 by Centennial Committee."

[9] In press interviews, the 2007 organizing committee co-chairman Sharon King Davis acknowledged that she had named the vehicle Miss Belvedere,[7] though the official website used leading up to the event did not use the nickname.

[9] In line with the Cold War realities of late 1950s America, the concrete enclosure was advertised as having been built to withstand nuclear attack, but was not airtight, which allowed water infligration.

[38] In November 2007, Humbertson's relatives shipped the car to the New Jersey facilities of Ultra One, a restoration firm whose specialty product is a de-rusting solution which is designed to remove only rust while leaving the underlying metal, paint and decals intact.

[23] In May 2009, when Dwight Foster of Ultra One participated in a podcast and provided details and new pictures, it was shown that Miss Belvedere's restoration was still underway, with the car's exterior having been virtually freed of its rust and mud concretions.

[40] Foster noted that he had purchased a 1957 Plymouth Savoy as a donor car to replace needed parts to keep Miss Belvedere from further deterioration, and the initial offer was a promotional stunt for his business.