So I had a quick go on a Vive the other day in Harvey Norman which was my first time trying a VR headset, then that afternoon spent some time looking up VR related stuff on the interwebs.
I came across this app called vridge by riftcat (https://riftcat.com/vridge
) which promised to bring PC quality VR to your smartphone. There are plenty of headsets that allow you to use your smartphone in them, but I found Samsung have just released the 2017 model Gear VR which comes with a controller. These are being given away with new S8 phones at the moment so I hopped on Gumtree and plenty of people selling them, so I went and got one today for $100 (RRP is $199).
My expectations were low, it's cheap, it's a phone... well... I have no idea what AC is like to play on a Rift or Vive, but I got Riftcat set up, launched AC, chose open VR and I'm seriously impressed. I was sat in the Lotus and did some laps of Spa. The immersion was awesome and it looked far better than I expected it to.
I've only had a quick play with it so far, so not sure how it would go using it in an actual race and have read the phone can get hot and start to throttle when using it for longer sessions. I wanted to experience what AC could be like in VR though and it's definitely given me that and it's pretty awesome.
Gear VR has some pros and cons. It has it's own sensors for head position that are more accurate than ones in your phone but that means you can't USB teather so the stream for Riftcat is over WIFI. I put it up to the very high preset on my 5ghz WIFI and didn't notice any problems but without 5ghz there could be. Any other headset is going to allow you to teather but you'll use phones sensors. The other plus was that the Gear VR is powered by Oculus technology and has its own Oculus app with a store full of apps and games.