Wonderbug's alter ego "Schlepcar" (so named due to its personalized California license plate "SCHLEP") was an old, beat up, conglomeration of several junked cars that looked like a rusty dune buggy. Like Herbie of The Walt Disney Company film fame, Schlepcar was alive and could drive itself, and could also talk in a mumbling voice. It was found in a junk yard by teenagers Barry Buntrock (David Levy), C.C. McNamara (John Anthony Bailey) and Susan Talbot (Carol Anne Seflinger). Schlepcar transformed into the shiny metal-flake orange Wonderbug (vocal effects provided by Frank Welker) whenever a magic horn (which played the bugle call for "cavalry charge") was sounded. In his Wonderbug identity, Schlepcar had the power of flight and was able to help the three teens capture crooks and prevent wrongdoing.