If you make carbon neutral fuel from renewable energy or nuclear energy, it contributes zero
new CO2 to the atmosphere. Sunfire energy is claiming their process can be 80% efficient,
While the Navy is saying theirs is 60% efficient.
If we look at the numbers, 60% efficient means it takes 55 Kwh of electricity to create a 33 Kwh gallon of gasoline.
80% means it would take 42 Kwh to create the same 33 Kwh gallon of gasoline.
Sunfire E-fuel
Naval Research Labs E-fuel
The man made fuels are drop in replacements for fuels made from oil, but can be carbon neutral.
The wild card in all this, is the oil companies, who have the best research teams, and the best funding.
I suspect, they know exactly where the economic viability point is, and will cut over, when it is the path of greater profits.
I think nuclear energy is a requirement to move from where we are to where we need to be.
For me, it is not about CO2, but sustainability. We have to have a path forward that could sustain everyone
alive, at a first world lifestyle, and that will take a lot more energy than oil can provide.