Yeah, this movie is full of honkies!
"Please vote to preserve the unique character of Warren…" - Robert Duvall

No, he's just a truck driver that got pissed at being honked at and passed. It's many a fantasy to do that to a honking piece of **** on the road.

https://imdb.com/title/tt0067023/keywords
< NOTHING supernatural in these KEYWORDS.
“Call a SPADE, a SPADE; and a TRANNY, a TRANNY, or an IT!!!”.
"THAT'S SOME BAD
SHIT
,
HARRY
!".

Damn dude!
You really know your stuff and live up to your name, The Mechanic!
"Please vote to preserve the unique character of Warren…" - Robert Duvall

The original 74-minute TV movie used a tag axle 1955 Peterbilt 281, making it looking like a Peterbilt 351, with two rear axles. The truck had a CAT 1674 turbocharged engine with a 13-speed transmission, making it capable of hauling loads over 30 tons and top speeds reaching 75–80 mph.So without a load,this truck could out pace that car.
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Spielberg said in an interview,he left it up to the audience to decide if the driver and or the truck were demon possessed
And there you have it.
Every movie we watch is up to our own interpretation and there is no right or wrong.
the numerous license plates on the front of the semi suggests he was a serial killer and those were his trophies.
I have heard that to and I suppose so.
But I remember seeing trucks with multiple license plates on the trailer back in the day.
"Please vote to preserve the unique character of Warren…" - Robert Duvall

Spielberg said in an interview,he left it up to the audience to decide if the driver and or the truck were demon possessed,but the numerous license plates on the front of the semi suggests he was a serial killer and those were his trophies.
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I heard him say it when I watched the other night.
Which makes me think the gas tanker trailer was empty.
Besides, if it was full then the driver would have been fired for being late with it or arrested if he had stolen it.
"Please vote to preserve the unique character of Warren…" - Robert Duvall

I heard Dennis Weaver ask the same thing when he was right on him. Paraphrasing here: "How does he go so fast or something" yet I didn't hear him say it the last time I watched a few years ago.
Tell you what…When I send my ex-wife her money…you can lick the stamps.

At the beginning,there was a side view of the truck that looked like it was leaking something.
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"The semi trailer seems to have an usual amount of horse power."
It was a gas tanker truck which I suspect was empty.
It would not have looked as cool if it had just been the front cab but he would not have been pulling that weight and could have really hauled ass and ended it sooner!
"Please vote to preserve the unique character of Warren…" - Robert Duvall

Thanks, bro!
“Call a SPADE, a SPADE; and a TRANNY, a TRANNY, or an IT!!!”.
"THAT'S SOME BAD
SHIT
,
HARRY
!".

There was an aura of something demonic/evil about it but I think it was a mortal man driving it.
"Please vote to preserve the unique character of Warren…" - Robert Duvall

Still that semi,should not of been able to do that kind of moves it did.
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^ You got it and I agree, bro!
"Please vote to preserve the unique character of Warren…" - Robert Duvall

I DON'T think there's anything SUPERNATURAL going on in this. He's just an ASSHOLE driver (the trucker), but still human.
“Call a SPADE, a SPADE; and a TRANNY, a TRANNY, or an IT!!!”.
"THAT'S SOME BAD
SHIT
,
HARRY
!".