The victim, later identified as Peter Forrest, was found at 201 Castle Hill Ave. just before just before 10:30 a.m.
He was pronounced dead at the scene and police are investigating his death as a homicide.
Neighbors who didn't want to be identified said the driver was tied up inside and sources say he may have been stabbed.
Neighbors said Forrest lived alone and described him as a hard-working man.
A representative of Marquis Ambulette, based in Nassau County, said Tuesday that they are cooperating with police on the investigation.
The victim's cause of death was not yet known and there is no word on a motive.
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