OK, here is my 2 cents. A roof rack allows access to the rear trunk, but I keep having to replace roof racks, garage doors, bicycles and car roof because I forget they are up there when I come flying into my garage, destroyed countless times until I came to the conclusion that my mind is getting shot and can't remember stuff. Even if you are young and strong minded, sooner or later you are going to slice your bikes on an overhang (at a motel or at home). Also they are a pain to put bikes on. Out went the roof rack to be replaced with a trunk rack for our cars and a hitch rack for the truck. The trunk rack doesn't work well with women's bikes, don't fit. Women's bikes are always jury rigged on the rack. Can't get into the trunk without removing bikes and partially removing the rack. The hitch rack is probably the easiest to use, but mountain bikes with front suspension don't fit well on them. I can't open my tailgate all the way with the hitch rack on and even less far with 2 bikes on it. A hitch rack is hard to put on if you have a 2 inch receiver as they are often designed for 1 1/4 receiver and the supplied adaptors are hard to work with. If you get one that sticks way out to allow clearance for the tailgate or hatch then you have problems backing up and they drag on the ground when you go over humps or curbs. I guess for me the hitch rack is the best of all the available bad solutions. If I am going out alone I toss it in the bed of my truck. I bought two old folders a year ago and I am going to try to put them in the car when we go in vacation. That might make life easier?