Alde hydronic furnace/heater-------- Has the future arrived?

The ironic thing is that Truma has been selling these these for years in Europe and elsewhere, but refuses to sell them (well refuses to sell -anything- except their propane level meter) in the US. They have a model (Combi 6E) that is both propane and electric powered (can use either/or), and is a furnace/water heater. If the temperature gets below 35, it will turn on just enough to keep from freezing, and if that doesn't work, will passively dump the tank outside so it won't rupture.