Will this system work on a Hyndai sonata...
Will this system work on a Hyndai sonata 2006
It will work, but it's not all that you need to build a system.
You'll need two pairs of Q Towers, one pair of Q5 Q clips and one pair of Q99 Q clips (http://www.backcountry.com/yakima-q-clips-1-pair-yak0074.html), and a pair of 58" crossbars (http://www.backcountry.com/yakima-58-inch-round-bar-1-pair.html).
Then, you have to buy the mounts for whatever you'd like to stick up there - bikes, skis, boards, etc.