Then feel free to explain to me how HPFI would work in a gasoline operated engine. I understood that it only worked in compression ignition (diesel) engines, not capacative ignition (gasoline) engines.
The finer the droplets of fuel & the more air in close contact with each molecule the more complete the energy release. More power, less waste.
I grew up near on of the premier automotive research facilities, my Dad & many friends & neighbors worked there.
I'm 50 years old & know pretty much everything that went on there for longer than that, enough to prove to me that things could easily have been much different.
It's not the money, I'm not sure of all the motives.
I am sure that for the same manufacturing cost we could have had 30% more MPG for the past 65 years.
Those sand savages could still be wondering around fighting each other on camels.
We wouldn't even know about them except for magazines at the dentist.