You still have to go over the GW bridge and thru the area that P, Cambell is talking about before I-287, right? If I went over the GW, I think I would just continue down I-95. Going I-81 would be more scenic, but if time is a consideration, then the GW to I-95 CT to I-195 in Providence to the Cape is probably the quickest. It's definitely the shortest.