Nowadays most people think of truckers as little more than the drivers of those giant trucks folks like to curse at on the freeway, but back in the 70s truckers were seen as larger-than-life figures who ruled the road.
Movies like Every Which Way But Loose, Convoy and Smokey and the Bandit made truckers out to be blue collar heroes, who tamed the highways and took s#@t from no man, and people were lining up to drive big rigs.
Truckers even had their own magazine- Overdrive, known as "the voice of the American trucker".
Overdrive was made for the red-blooded American truck driving men, and every issue featured lovely models meant to "inspire" those guys while on the long haul across the USA. They even included a "date master" so they wouldn't lose track of the days while they're truckin' for a livin'.
-Via design you trust