Thanx for the input. I hadn't even thought about the height the bikes would sit at. And as for the kids, I would love to take them on bike trails, but the bike mount has to come first. Mostly when my kids go with me, it's to get ice cream or go to the movies. Hard to avoid city streets when we do that. And as for the hitch mount, my husband says NO. Simply because we need to combine taking the bikes as well as the camp-trailer. I have seen those bike hitch mount thingys that you can hitch your trailer on to, but they are kinda hokey. We'd bend the thing up the first time we used it. That's why I was looking at a roof mount. There seems to be pros and cons to all of them. Thanx again. Gave me more ideas.