What do you think of these “snow socks”? 🙂

These “snowsocks” as they are called, does any of you have these? So I don’t know…like it is that it works but…I can’t imagine the long one! Is probably only meant as an emergency aid or…? i.e. if you don’t get any more forwards on a slope you pull these “socks” quickly over the tires, so as a starting aid I think, and not to drive 100 kilometers with it