It seems that the conceptual exhaust burger grill is definitely not a new idea. Though we'd like to think exhaust burgers are a product of our scientific breakthroughs, this scan from a 1930 issue of Modern Mechanics proves otherwise. This exhaust cooking idea from the 1930's is unique because it's a steam pressure cooker. The heat from the exhaust is capable of heating and cooking the foods. The original report even suggests that only an hour of driving can thoroughly cook meat and vegetables. Click through to see the full-sized scan. [Modern Mechanix]