Kia Sorrento???Your friends sound like SUV fanatics. Anything that isn't an SUV doesn't deserve to taken on trips.You should direct your friends to this site:
http://poseur.4x4.org/ It will educate them on what "road cars" are supposed to be. Basically, unless you off-road, or go on safaris, you should not be driving an SUV.To answer your question, I have not yet taken my Vibe on any extended trips. Since I have a GT, the ride tends to be rougher than a normal car and I tend to "drive it like I stole it" to take advantage of the power curve. I would imagine, that my passengers would be more comfortable in a different car, but we wouldn't get there as fast in a more "comfortable car".