The closest model I can compare the E-trek with is one of Sportsmobile offerings (the only Sprinter model they show off on YouTube). It definitely doesn't have the sizzle the E-trek does, but it has a diesel stove (the diesel combustion intake and exhaust is blown to the outside like the furnace so no fumes inside), a diesel flat plate water heater, a hydronic heater, and a Powertech diesel generator. Both get the same results, and both are pretty close in price, although the lithium-ion batteries would make the E-Trek more expensive.
