Whipping a home-brew up in your garage is easy. Getting a car/engine combo to pass the full EPA/NHTSA certification is another.
50,000 miles with NO Maintenance except toping fluids and then pass the EPA test, change the fluids and run another 50,000 miles NO Maintenance and pass the test again.
When he does that with one of his “designs’, then you can pat him on the back.
http://www.northerntool.com/webapp/wcs/stores/servlet/product_6970_200354269_200354269
There you go...
I’ve seen topers put away hair tonic, mouthwash and Sterno but I never saw one brave enough to chug transmission fluid.