https://www.mercurynews.com/2021/12/31/mr-roadshow-tesla-says-no-more-video-games-while-driving/

Q: Ed Mocarsk claims you don’t need chains if you have an 4WD vehicle. That is not the case.

I was stopped once heading to Kirkwood from Tahoe by the CHP, making sure my vehicle had four-wheel drive, and that I had chains. I did not have any, thinking that I did not need them. I was informed that it was necessary to carry chains, even for 4WD vehicles.