ESPAR HEATER SYSTEMS builds gasoline and diesel fired heaters for water cooled vehicles.
It sounds like a great deal; teamed up with a timer, you can set it up to warm things up for you on cold mornings without having to run the motor. It uses only a fraction of the fuel an idling engine would, not to mention that a warm engine uses less fuel in cold weather.
Looks like the price is around $1000, so regardless of how nice it is it would be a long ROI.
But just think of how nice it would be to have the Suzuki nice & warm every time I got into it.
Sigh.