A gas station explodes and people fly out (some have blood on their faces).
A guy starts bleeding a bit from the mouth.
At the end a truck rams a car which catches on fire. Both the truck and car go off a cliff, and surprisingly since especially the truck is highly flammable there are no explosions. We see blood dripping from the steering wheel though.
Profanity
Mild
1 use of ass, 2 uses of hell, 1 use of damn, 1 use of bastard, 2 uses of "oh god.
Alcohol, Drugs & Smoking
Mild
Some guys drink beer in a cafe.
Frightening & Intense Scenes
Moderate
We never see the evil truck driver which adds to the suspense and we never find out officially why this all happened.
Suspenseful road rage throughout the movie.
The whole film is rather intense as this truck driver keeps antagonizing and then doing dangerous stunts on this guy in a car. This being from 1971 it is pretty slow moving and not a kick in your face suspense compared to today's thrillers, but the film does get more intense as it goes on.