Robert Martin offered a novel addition to the automobile in 1919: a stove. His invention would direct hot gases from the engine to a cooking chamber in the passenger compartment, where they could warm food even while the car was in transit. The stove’s lid is fitted with compression springs to prevent your casserole dish from rattling on the way to grandmother’s house.

Martin promises that the heating coil is sealed, so there’s no danger of contaminating the food by “the poisonous and injurious constituents of the exhaust gases” or of “smutting or blackening the cooking vessels by the soot.” So don’t worry about that.