What's the best solution to transport four bikes (two adult bikes, and two kids bikes - one with 20 inch wheels and one with 24 inch wheels)? Ideally not using any interior space, that's where the baby bike and stuff will go.
I have a 2012 XC90 Executive and I own a set of roof bars. I'd like to very much avoid going down the towbar route as a) I don't have one, and b) I don't want people to think I have a caravan.
Any recommendations gratefully received.