I have a 2003 Honda Odyssey. there will be 3 adults and 4 children in our van. so because of this i am trying not to put to much where everyone will be sitting. we will already have a big cooler by the middle section seats. i am renting a pack n play and another double stroller. so to save up on space and try and fit everything else in my trunk, i am thinking of putting the double stroller we have on top of our car and tie it down. i am sure we will hit rain somewhere (driving from kansas to iowa then to florida.) and i dont want my stroller to get soaking wet. i was thinking of get this bag here http://www.walmart.com/ip/SportRack-Sherpa-13-Roof-Bag-Cargo-Carrier/15611260 but i dont know if my double stroller will fit in it. i have a sit n stand. the one with 2 seats. so its pretty big. im up for any ideas! we leave next month!! so i need to hurry lol!! TIA!