Released in the 1980s, Mad Max type set in the future....the opening sequence is the hero on a futuristic "talking" motorbike, the first line of which is "beep, beep, beep bup pu lula".....during the film,there's a secret world revealed behind a cliff wall...that's about all I can remember of it, and I can't remember what it's called.

It might have only been released on video.

Can anyone help?

:help:

Could it be 'Warrior of the Lost World' - released in 1983??? (Film info here (http://doctor-forrester.home.mindspring.com/reviews_s05_ep501.html) )