My husband and 3 yr old are travelling to the East Coast from Australia in December. I am just wondering if anyone can help with driving tips for travel between New York, Washington and Boston. We are flying into JFK at 5pm on Dec 11th and hiring a car. The plan is to get as close to Philadelphia as we possibly can to stay the night and avoid the traffic around NY if possible. After looking around Philly in the morning we head to Washington to see the sights and spend the night. We aim to leave the next day about lunch time to make our way to Boston. We plan to drive about 5 or 6 hours and spend the night somewhere so that we are only a couple of hours drive from Boston the next day. We will spend the night in Boston and leave late morning to drive back to New York to drop the car off and where we will spend the majority of our stay. The tips I am most interested in are what driving conditions we can expect, where to expect traffic, what routes would be the best to take etc. We would prefer not to travel the same route twice. If anyone has experience at driving this area at this time of year any advice would be appreciated!!