This is an absolute hoot. You don't need to know the plot-it's totally unimportant.
Considering the subject, it's amazing that this could be made so endearingly daft, and you've got to give huge credit to the filmmakers for making it so enjoyable.
The great Ernest Borgnine- how much we miss him !- is brilliant as the nasty-but actually not so- cop.
Kris Kristofferson should've made more films like this, and gets a succession of brilliant quips and one-liners, and actually some quite piercing-and brilliantly timed- lines as well; a number of sequences show just how good KK really is.
The Country sound track is great, and the use of classical music around crashes adds to the way this just reduces me to fits of helpless giggling. Every time.
The political aspects were introduced just to give the thing enough of a plot to make it out to movie length, for it is only based on a song, after all. The destruction of the town by trucks is a masterpiece of slapstick. It's odd to see this from the director that gave us "The Wild Bunch", but it makes it one of the great fun movies of its period.
But, it's endearingly daft. I'm a car driver, so if the speed cops come off worst, how can I not enjoy it, even if it's lorry drivers doing it?
Great fun; it may not deserve five stars for Quality, but for sheer enjoyment it can have no less.