winter is just beginning in the USA/Canada area, and here I am just learning of the Haring Auto Ice Raft for the first time. Seems to be for 1930s vehicles

https://forums.aaca.org/profile/83135-jazzer3/content/page/16/?all_activity=1

https://www.ebay.com/itm/226316117237

https://check_the_oil_promotions_llc.liveauctioneers.com/item/191619744_pair-of-haring-auto-ice-raft-tire-accessories

https://check_the_oil_promotions_llc.liveauctioneers.com/catalog/351221_december-automobilia-collectibles-auction/?page=6&pageSize=120