Mounting em is easier than pullin em

[Grumpa]

Russian artillery tractor whose name I can't think of with gun of unknown caliber

 

[locomotive]

This is why I like military vehicles. Often necessity is the mother of invention.

 

[BarleyBop]

This is why

Great observation! And though the necessity is none too pleasant, the form is usually quite honest in its intent and utility. At least in days past.
Not like one of my pet peeves, when I began to notice that cars were looking like Braun shavers, and vice-versa!