Many years ago visitpa had road maps that could join together so we could visit most of the state by vehicle. And there were a couple different ways you could go about it. Regions or drive the exterior. Interior had a map.

I did it w friends in my 20's on different occasions but never at once. I actually have always wanted to do it at once over a month in the fall or early summer.

I just went to find the old road tours. I don't see anything like that listed. They do have a bunch of driving tours available by season & region that look awesome. I am sure you could put those together and have a great time.

Perhaps even add some biking or hiking in areas like the Allegheny Passage to make it special.