When the aliens take David Vincent on a trip in the space craft, it uses the sound effects from Earth vs. the Flying Saucers (1956), and also emulates the trip Dr Russell and Carol Marvin took with the aliens of that movie, showing a view of Earth from outer space after only a few seconds of flight.
The blue car is a 1967 Ford Galaxie 500.
Michael Rennie previously played the alien Klaatu in the film "The day the Earth stood still"
First of two appearances by Patricia smith in the series, she would later appear as Sally Palay in season 2 story The Spores.
Dabney Coleman would go on to play Franklin Hart Jr alongside Dolly Parton in 9 to 5.