I do have ways of making automobiles more efficient. They may be good ideas. Notwithstanding the greatness or worthlessness thereof, I won't force other to implement them. That would be inappropriate.
What you are doing is engaging in selectively labeling what is inappropriate. That is inappropriate. Putting pure free markets on a pedestal is kind of evocative of Frederick Seitz.
I kind of like hybrid hydraulic drive combined with supercapacitor storage in a series format, designed for transmission and regenerative braking. As for the ICE portion, I like the floating (free) piston designs with homogeneous charge compression ignition (HCCI) fuel delivery systems. Interesting stuff.
Could be. Is it giving us the efficiency we need and want? Right now?