I didn't say you did, I said I often needed chains. I don't think they would work well on my prius with its traction control. Have you taken your prius? those tires? I see you get my point. Wasn't trying to argue, just that the prius E four probably is not good enoug for those trips. Yep. Not trying to argue I think if toyota has a good e awd system they should sell it here. I just don't think it will be used much in california. I took the snow in a jeep with no chains, but skills, but used chains on fwd and rwd cars. I also flew up a lot in a small cesna, where the summer is the danger not the winter.