I have been looking for alternatives to snow chains for driving in the mountains. Last year, the car hire company had run out of chains and we were unable to buy any of the right size en route, so ended up taking the risk of not having any - fortunately, the roads were clear all the way. To avoid the same problem again (and the ever rising cost of hiring them), I have been thinking of buying some Autosocks, which are a fabric alternative to chains, to take with me on holiday. At first sight, they seem to be a good, effective alternative to chains. They are light, so can easily be carried from home in the suitcase, one size fits a reasonable range of tyre sizes, and they look easy to fit. Has anyone ever used them? If so, are they as effective as they claim?