When the car was buried in 1957, more than 800 people submitted guesses on what Tulsa's population — which was around 250,000 in 1957 — would be in 2007. Guesses ranged from zero to 2 billion, but Raymond E. Humbertson's guess of 384,743 was only slightly off the official U.S. Census count of 382,457.
Winner of buried Belvedere died in 1979 - Yahoo! News
Seems like the winner died in 1979. Some how, the fact that he and his wife pased away with no children seems appropriate concsidering the shape of the car.
