They work GREAT in the snow and ice, even slush. I never once got stuck in my WRX even with its summer performance tires, so I didn't try them on my car. But I was following my friend Ducky's 07 RX-8, he got stuck on the slightest of inclines that was packed snow and ice. Anyone familiar with the RX-8 knows they are RWD, and have very little clearance for chains. In fact, I believe Ducky told me chains are not usable at all due to the limited clearance. He got a set of Autosocks instead, and even with the limited clearance, we were able to put them on with a little patience. Maybe 10 minutes total for both tires. After they were on, he continued on without issue.
As for my girlfriends car, the 2005 Chevy Aveo, they worked great as well. However, the Autosocks do now have heavy wear, even some holes in them. This was due to the fact we left them on the car even when there was a few patches of clear pavement. We also took them on the highways, though we NEVER exceeded the max recommended 30MPH speed rating. My recommendation, take them off as soon as you are clear of the slippery stuff. This is what I told Ducky, and I believe his still look brand new.