www.madmaxmovies.com

Some background on the Cyclops (the bus). It was a functional vehicle that was actually two independent trucks that hooked together to drive as one. This made it easier to get the two halves to the set.
Almost every scene where you see the bus driving down the road (or hanging over a cliff) has the driver and piano player (in the lounge above the driver) clearly visible. It must have been pretty weird to be sitting in the driver's seat when the bus was hanging over the cliff.

Alright, my turn.
Guess this movie.

Immortal.
http://www.imdb.com/title/tt0314063/

Correct

It seems everyone knows their movies. This one should be easy:

The New Barbarians.

I did not know it by that name, but you are correct. In the US it was 'Warriors of the Wasteland".

Probably one of the worst, if not THE worst.

Next... any guesses?

Hints?

Swayze.