The shuttle bus from the airport to the rental car company’s parking lot comes about every 20-30 minutes. The rental car company’s counter is easy to find. However, the counter staff insisted on adding $59 for the EZ pass, saying that the highways from Boston to Washington don’t accept cash or credit card payments. Though the booking website mentioned only paying $259 at the store, Dollar ended up charging me $369 with tax included. I didn't bother arguing but felt that the rental car company should inform customers more clearly; it's quite disappointing.