Beer transport trucks
Like other vehicles, beer transport trucks have gone through several makeovers during the last several decades. Back when highway robberies weren’t common (not that they are now), beer transport trucks exposed their cargo for all eyes to see. Sun and heat probably affected the quality of the beverage, but it didn’t matter as long as you got good and drunk.
Now, beer companies have their own semi-trucks to transport their precious cargo across state borders. They’re not unlike the semis you see zooming down the freeway, but they have built-in coolers to keep the stock nice and cool until it reaches its destination.