Automatic Tyre Chains for cars

I was watching the contractor plow snow from the parking lot, onspot chains flailing away under the tyres, thinking how much I'd like the functionality for the drive home - at least for that unexpected patch of black ice - packaged into something that would fit onto a car. Nothing on the market fits the bill - resin sprays don't work quickly enough, retractable studs aren't realistic, and I'm looking for something more effective than winter tyres in the very lowest friction conditions. Months later, I think I have an idea for something for a 1000kg vehicle, that can add grip on snow & ice without stopping or compromising dry-road grip.... Attached to the wheel rim is a new rotating surface attached to the wheel, angled obtusely to the road and clear of the tyre by about 3cm, enough to allow the tyre to flex. Distributed around the perimeter are twenty or so arms that are deployed under the tyre, and retracted from it, electrically or pneumatically. The arms are made to be flexible vertically (so as to flex in conformity with the tyre), but rigid laterally and longitudinally. They would be surfaced with the high-tech textiles used on fabric chains and/or metal chains and/or studs. They would work best mounted on the inside of the wheel, where they would not interfere with extremes of dry-road cornering. This would bring clearance issues, but surmountable ones. The travel of the arms would determine space requirements - rotating around an axis could be a lot more compact than traveling along a linear one. Proposed as a complement to winter tyres, not an alternative. Activation only allowed by ABS and slip control systems - that are mandatory on new cars in 2011 - to restrict use to appropriate moments. Minimal weight and cost for the target of a safety enhancement that can be deployed on a moving vehicle. Noisy (when deployed) and expensive, but less so than accidents. Might even work on the front (steered) wheels.