When I first got my license, I used to get nervous driving by these massive chunks of metal. I'd avoid trying to share the road with them by either speeding up or switching lanes. I've had a few near misses in my day. There's nothing like an 18-wheeler honking at you in malice. But now... I just can't get enough of them.
Every truck has a particular function. And following that function, a particular form. In short, they're really cool to look at.
(One of these days, I'm gonna kill myself taking these pictures.)