One of the earliest -- and hence best -- of a handful of 70's trucker movies, a once quite hot, but now hopelessly passé sub-genre which beget a mixed bag of films which includes the stellar Claudia Jennings vehicle "Truck Stop Women," the not half bad Peter Fonda pic "High Ballin'," the great'n'gritty overlooked sleeper "Road Movie," Sam Peckinpah's excruciatingly stupid "Convoy," the alarmingly atrocious Chuck Norris chopsocky turkey "Breaker! Breaker!," and the sturdy made-for-TV item "Steel Cowboy." Jan-Michael Vincent, whose career in the Me Decade was all over the map, peaking with "The Mechanic" and "Big Wednesday" and hitting a wonderfully wretched all-time low with the gloriously godawful post-nuke sci-fi atrocity "Damnation Alley," here gives one of his strongest, most convincing and engaging performances to date as Carrol Jo Hummer, an earnest, moral, youthful independent Diesel driver who finds out that his employers are crooked bastards who sell illegal contraband on the side. Greatly appalled by this discovery, Hummer decides to blow the whistle on the entire unlawful business, becoming a modern-day folk hero in the process and subsequently putting both himself and his plucky wife Jerri (a stand-out portrayal by the always fine and assertive Kay Lenz) in considerable jeopardy.
Director Jonathan Kaplan, who was then on a real B-movie roll churning out such kick-ass exploitation flicks as "Night Call Nurses," "The Student Teachers," and "Truck Turner" on a regular basis, hits a brisk, solid groove at the very start of the film and masterfully sustains it to the thrilling end, expertly milking the forever effective and appealing "one lone little man against the big, bad system" populist hero subtext in Ken Friedman's tightly efficient script for maximum socko entertainment. Kudos also to the exceptional supporting cast ridden with familiar film faces: the late, great, ever-delightful Slim Pickens as corrupt truck stop manager Duane Haller, L.Q. Jones at his most sublimely slimy and serpentine as head heavy Buck Westle, Martin Kove as one of Westle's thuggish goons, R.G. Armstrong as a shifty, manipulative prosecuting attorney, veteran character actor Don Porter as the smug CEO who's running the whole no-count operation, frequent Kaplan pic co-star Johnny Ray McGhee as an angry black trucker, Sam Laws as McGhee's rascally lovable ol' coot pop, and the irreplaceable Dick Miller as fidgety, peppery gear-jammer R. "Birdie" Corman. Further enhanced by Fred Koenekamp's crisp, inventive cinematography, David Nichtern's stirring score, and Valerie Carter tearfully warbling the marvelously mawkish country-and-western weeper "Drifting and Dreaming of You" all of three times on the soundtrack, "White Line Fever" gets a hearty ten-four from your good buddy film critic as quintessential 70's drive-in cinema at its most bluntly exciting and unpretentious best.