Which is why I was so disappointed when the FAQ for the new Chromecast Audio says it won't work in your car.
|Insert sad face emoticon here... Or so I thought....|
But I can tell you, where there is a will, there most definitely is a way, and here is what you will need.
1) A Chromecast Audio
2) Your daily driver phone with the ability to create a wifi hotspot
3) A third device to set up the Chromecast (phone, tablet or laptop)
4) A car with a USB port and 3.5mm aux jack.
Got all that? Awesome, let's continue...
Firstly you will need to set up the WIFI hotspot on your phone and turn it on.
Then connect your second device to the hotspot on your phone.
Follow the setup instructions for the Chromecast Audio, but connect it to the hotspot provided by your phone.
Test by playing audio from the second device. Did it work? Great! Now let's move this party out to the car.
Hook up the Chromecast to the USB port and Aux jack in your car (and power up the stereo in your car)
Turn on the WIFI hotspot on your phone, and open your favorite Chromecast compatible music app, tap the cast icon and away you go!
Now it is worth mentioning that as your phone is only connected to WIFI by proxy, the official Chromecast App will not recognise the device as you are creating as opposed to connected to a network.
Now, if you are like me you are thinking, Yeah nice one, but it is still easier just to plug my phone straight in to the Aux cable. and you could be right, but combine that with a Tasker event, or, as I have, you could use NFC tags to enable your WIFI hotspot, and the whole process becomes a hundred time easier