Hi - heading to Portsmouth & Boston this weekend and we're flying into and staying in Portsmouth. We're trying to decide whether or not to rent a car and the only reason we would rent one would be to drive to Boston. But the last time I was there I found traffic to be crazy and parking to be tough to find and really expensive once we found it. I'd prefer to just take a train in and I thought someone told me I could but I can't find any T lines that go as far as Portsmouth. anyone know an easy/cost-effective way and safe way for 4 ladies to get from Portsmouth to Boston for the day? Thanks!