Who in MA? Peabody drove our X5 up and did the tags for us at the town hall when I still lived up there... That, a transit tag, or a AAA truck and straight 2's on the CSI survey should get you out of there.
Buying cars in MA is such a PITA. To think that where in other parts of the country having the bill of sale in the glovebox is good enough! You could give the dealer the benefit of the doubt that you wanted to register the car where taxes are less atrocious.