Problems using chromecast in my car

Hi, i have been trying to use chromecast in my car. And I've seen many people online do it however when i try it, i get the audio but no visual. It works on my home screen but not in my car. This is a video of what o have:
https://www.dropbox.com/s/y0fy5b3zwi...93407.mp4?dl=0

P.s. in case someone is going to ask why would you do this? Because my cars gps is outdated since 2009 and this way o can use my phones gps along with other benefits.

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