I just created a free Stadia account, got a 2 month subscription to Stadia Pro, so I can play games like this one without having to buy it for 409 DKK. Stadia Pro is 69 DKK / month and currently gives me access to 9 games.
I'm cancelling my pro subscription, which should then run out on June 19th.
Grid plays well and looks fine on the Stadia. I basically have no complaints, except maybe I prefer playing Dirt Rally. I should play some more of this.