Anyone use one of the car mounts that connect to the louvers in your air vents? My S5 has overheated and shut down twice now while in a windshield mount and we're not even into full summer here in the desert so I guess I'm going to have to get it off the windshield. If you've used one I'd like to hear your opinions on them. I've got an older Jeep Grand Cherokee and the vents appear pretty stout and it will certainly keep it cool and out of the direct sun.