iPhone (6,7,8) holder for a car cassette player.

This is an iPhone holder that i designed for my old car (Opel Astra from 1996) which only has a cassette player in its radio. I don't use cassettes so I figured I can use the slot for something different. The position of the radio makes for a good spot for a phone where it does not obstruct the view and is easily accessible. The phone is inclined at a 15° angle which is comfortable for me and fits the car nicely. I have tested it only with an iPhone 7 but it should fit both 6 and 8 just as well.