This is the technology your looking for.
Just need to find it in a SMALLER package.
Carbon Fiber Dual Temp Waterproof Motorcycle Single 9" x 15" Seat Heater Pad, Heated Seat Kit
Carbon Fiber technology is the best seat heating pad material in the marketplace.
The first reason is that Carbon Fiber thread is pliable and a good conductor of electricity which can be designed to incorporate a variety of shapes which are interconnected and form a grid which can be sewn over. Carbon Fiber will not corrode or break like copper heating elements.
Second, this Deluxe Universal Seat Heater allows the installer to trim the length of the carbon fiber pads or to cut holes in the center of the pads to accommodate any seat design or seat sensor and still provide heat. Pads are cut with regular scissors or razor blade to create any pattern to fit any seat.
Third, the Parallel heating fibers ensure long life and dependability. With conventional, serial seat heaters, any abuse that breaks the heating wire shuts off the entire heater; the same abuse would only render a small portion of our heater inoperative so the driver will still be cozy and warm!
Fourth, the heating elements are completely waterproof & most of the pad (except where power is supplied) is puncture proof.
Fifth, Ultra-thin carbon fibers mean no bulky and uncomfortable wires. Other than the soothing warmth there's nothing to make the driver or passenger think their seats are out of the ordinary!
This kit will install in any seat with a 12 volt electrical system. This kit is for a single seat's bottom or back. The single pad kit is designed to install between your seat upholstery and the padding underneath. Installation may require removal and re-installation of seat and seat covers.
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FIR Infrared Heat 12 Volt Car, Boat, RV Heated Seat Pad
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<map name="6ced4f177c1e6cb"><area shape="rect" coords="0,0,70,53" href="http://ep.yimg.com/ca/I/sports-imports_2195_9694572"></map>This 12 volt heating pad plugs into your vehicle's cigarette lighter. The heating element is made of Carbon Fiber Stitching in a honeycomb pattern rather than 1 continuous wire zigzagging through the pad such as all other heated pads and blankets.
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