This film starts off in glorious trucker movie fashion with a 1970s country song and footage of trucks... but then we see random Mexican thugs shooting people in the desert and a landed space capsule! The truckers including Richard Egan end up fighting a Nazi hiding in the desert and a biker gang too (because they are always hanging around in the desert looking for fights)...
This is a confusing film though makes good use of the tiny budget. The film had a troubled genesis, Richard Egan left early on over a money dispute (though did return for the end) which meant Charles Napier got a promotion.
The film also stars champion boxer Sonny Liston who appears as a truck driver not long before his death.