There are 4 of us flying into Haneda and then out of Narita. We have a 6 hour layover. We are also traveling with 2 dogs ( a chihuahua and an Italian greyhound mix). From what I have found online, it will be cheaper for us to rent a mini van (9000 yen plus 5500 yen one way fee), than to take the bus or shuttle (which doesn't seem like an option with our Italian greyhound). I cannot find anywhere how much the toll fees are between the 2 airports, or the approximate time it will take. Does anyone know?