Join Date: Feb 2010
Location: Ontario, Canada
sure, get one of those muscle ache heating pads (like $20 Tops at wal mart), pull the seat bottom back (just some rings holding it behind the plastic covers on the side)...
slide the heating pad up the back rest and plug it into an inverter... or hardwire an inverter in somewhere and plug it in there haha!!!
(all kidding aside my friend DID do this to his old tercel, it worked like MAGIC for years on his drivers seat)
************this is only if you're a cheap S.O.B haha! otherwise the above solution is best :P