Woot offers Zone Tech WC0012 Heated 12v Steering Wheel Cover for $18.99 (orig. $28.89) free shipping with Amazon Prime.

Product Description:
No more freezing in traffic; Change Freezing Winter car drives to a Comfortable Warm Ride with the Zone Tech Car Steering Wheel 12V Heated Cover. Use this heated cover in your vehicle to enjoy a more Relaxing drive during the frigid winter weathers.