Rod Ewart, 40, was driving a blue Cadillac at 76 mph and changing lanes in eastbound parkway traffic at about 8:22 p.m., police said. A trooper stopped the car near the Route 110 exit and noticed Ewart "appeared nervous," according to a news release.
Police found that Ewart did not have a driver's license, then discovered a loaded handgun in the car's center console during an impound search.
Ewart was arrested on charges of criminal possession of a weapon and several traffic violations, police said. His arraignment information at First District Court in Hempstead was not immediately available.