Some of these pictures and descriptions may give away plot details that you might not want to know before watching the film.
1970's Trucker Movies. Here's a forgotten sub genre that should probaby stay that way along with Hogging the Zipper and Bears in the Air. In this fine example, an independent trucker at war with corporate thugs who have already tried stopping him with beatings, blacklists, murder indictments truck attacks and crooked cops, try a new tactic. He goes home and finds his truck trashed and covered with spray paint. When he opens the cab he finds a rattlesnake inside, put there to kill him. He uses his shotgun barrel to lift the snake out of the truck then throws it on the ground and shoots it. They used a live Western Diamond-backed Rattlesnake, which is perfectly appropriate for the Tucson setting.