Moldt, a 40-year-old mortgage broker, rarely drank, but he had made a decision to go out that evening in November 1997.
According to The National Missing and Unidentified Persons System (NamUs), on the evening of November 7, 1997, Moldt left a night club at about 11 p.m. He didn't appear to be drunk.
Almost 22 years later, the mystery of Moldt's disappearance remained unsolved - until last month.
An image of the submerged auto is still available to view on Google Earth.
"The vehicle's exterior was heavily calcified and was obviously in the water for a significant amount of time", the sheriff's office said, according to the newspaper.
The skeletal remains were of William Moldt, who went missing in 1997 at the age of 40, according to the Palm Beach county sheriff's office.
"Amazingly, a vehicle had plainly [been] visible on a Google Earth satellite photo of the area since 2007, but apparently no one had noticed it until 2019, when a property surveyor saw the auto while looking at Google Earth", Moldt's "resolved" listing on The Charley Project website states.
The Palm Beach Post first reported on authorities' identification of the body.
Cops were called after someone spotted a vehicle on Google Earth.
When they got there on August 28, deputies found a heavily calcified vehicle at the bottom of the pond that "was obviously in the water for a significant amount of time".
The former resident contacted a current homeowner, who used a drone to confirm it was a white vehicle on the edge of the pond behind his house.
The vehicle and remains were towed to the Medical Examiner's Office for processing.
A report by the Charley Project, an online database of cold cases in the United States, said the "vehicle had plainly [been] visible on a Google Earth satellite photo of the area since 2007, but apparently no-one had noticed it until 2019". When the drone confirmed that the vehicle was there, Fay called the sheriff's office, according to the report. One week later the remains were positively identified as belonging to Mr Moldt.
Lantana and Wellington are about 30 kilometres apart.
When the auto was pulled from the water, deputies saw skeletal remains inside.
He had called his girlfriend at around 9.30pm to tell her he would be home soon, but had not been heard from since.