Tesla model S phone holder vent

I was sick of my vent holders not keeping a grip in my Tesla. They either kept sliding around, or came of while accelerating. I looked at some aftermarket phone holder, and I noticed they didn't grip the vent-blades but gripped on the walls of the vent. So I decided to design a similar grip, and it worked out perfectly. This grip seems to hold very well, but I will keep improving if necessary. As you can see, I simple bolted a round knob on the plate, but you can do whatever you want with it. If the print still slides around, you can use some double-sided tape or glue some rubber band in the grip. This way it won't slide around.