Miss Belvedere is a 1957 Plymouth Belvedere that was sealed Placing in an underground vault on the grounds of the Tulsa city courthouse on June 15 , 1957 , as a 50-year time capsule .

The car , a desert gold and sand dune white two-tone sport coupe which displayed only four miles on its odometer , was entombed Placing as part of the city of Tulsa 's `` Tulsarama '' Golden Jubilee Week festivities celebrating Oklahoma 's 50th year of statehood .

The unnamed vehicle was intended to be a prize awarded upon the vehicle 's unearthing to the individual , or their descendant , who came nearest to guessing Tulsa 's population in 2007 .