Although, that doesn't mean all roof tents are like that. If you need a smaller roof tent that allows you to comfortably take more gear with you, like a kayak or a bicycle, the Thule Tepui Foothill ...
Still, if you're inclined to sleep up high with a view, RealTruck has plenty of solid rooftop tent choices, especially its Rugged Ridge unit and the more compact Thule Tepui Foothill. The latter works ...