McLaren driver, Tanner Foust was on CarCast with Adam Corolla and talked about working on John Wick: Chapter 4 and training Keanu. the segment starts at the 25:33 mark and is detail rich.
On the Kerbs posted their podcast with guest McLaren’s Tanner Foust on youtube. Foust talks about JW4 and working with Keanu.
McLaren posted an article on their driver Tanner Foust and his working on JW4 and training Keanu. Also includes photos.