I just returned from a 4-day, 760 mile, roadtrip to Bangor ME using Boston MA as a hub. The roadtrip as a whole was great, but there were a lot of difficult miles.
Due to poor planning, I was stuck taking the rental car into downtown Boston. Purely by accident we ended up parking at the Boston Commons (expensive, but a great location for wandering Boston and catching the Freedom Trail). I ran a red light while driving to the Commons via Chinatown. I found the drive from the Boston Commons to Logan Airport (10 miles?) a harrowing experience.
The little towns of Maine were amazingly crowded. We got lucky with respect to Acadia National Park and encountered few visitors, but we were awed by the crowds in Bar Harbor. Driving the rotaries in Augusta, ME, should be avoided by
the faint of heart. I also learned that roundabouts are difficult when on foot.
We wanted to visit Portsmouth, NH, but it was more crowded than a Phoenix freeway during rush hour.