Thanks to the celebritycarmuseum for sharing photos of Keanu with one of their cars on instagram. They posted the following with the photos:
Last night we got to reunite Keanu Reeves with Vin Diesel’s GTX from “Fate of the Furious”. After filming Keanu and world famous driver Tanner Foust spent time in this car learning how to do the stunt driving for “John Wick 4”. You can see Keanu driving this car on YouTube with the title John Wick killing at the speed of traffic”
Note: The Celebrity Car Museum is in Branson, MO. I am assuming they drove the car to Quapaw, OK.