Battletruck aka. Warlords of the 21st Century (1982)
AKA New Zealand's answer to Megaweapon, starring that guy from The Warriors and featuring that other guy from The Quiet Earth. Set in 1994 after the Oil Wars (which we all remember) this is a star-crossed love story between a heavily armored semi truck and the motorcycle that loves him. Or it's a bunch of idiots trying to rip off Mad Max with a terrible 80's soundtrack and a villain named Stryker (yes, I know that's a stretch) who doesn't quite manage to pull off the same nuanced level of performance we've come to expect from Jack Palance, but does make up for it by screaming "aaaaaargh" a lot. (seriously, watch this clip from the end of the movie: https://www.youtube.com/watch?t=72&v=j8vxxBYE5n4)
And if you need more evidence, here's the full trailer.
https://www.youtube.com/watch?v=MxsFiVRX6BE
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Tornadoboy
commented
Bruno Lawrence is the guy from The Quiet Earth