A very interesting concept. Questions: Since your invention is dependent on exhaust gas from an internal combustion engine and since many of us sit in one location, immobile for various lengths of time, wouldn't holding tanks still be necessary? How would the addition of this device affect the manufacturer's power train warranty? Since you are injecting human waste into the exhaust do you need EPA certification? How much maintenance is required? What is the estimated cost of your device when mass produced?
