The Way-Outs are a spoofed version the Beatles
The Wayouts are voiced by John Stephenson (who voices the Policeman in this episode), Allan Melvin (who voices the Car 7 Policeman in this episode), and Don Messick (who voices Bamm-Bamm and Hoppy in this episode).
This appears to be the only episode in the series where the humans wear long pants and foot coverings.