u/whomdoneit

I have a sedan with factory roof rack bars that feature T-Slot tracks. Are truck bed style fork mount systems save on a car roof? Seems like I've never seen this set up out in the world. Looks to be a secure option compared to tray style racks that can cost hundreds of dollars. Am I over thinking or under thinking this??

Example: https://www.amazon.com/gp/product/B08C2HHFRL/ref=ox_sc_saved_image_1?smid=AYN5BTMAOQ08E&psc=1