Yes, and I have posted numerous times that the first change in direction will be to synthesize gasoline from coal. Germany did during World War II and South Africa is doing it today.
I think you and I might have exchanged posts on this before. My point was that I believe hydrogen is a boondoggle - a waste of time and resources. The only way it could work would be tank exchange, which would require an entire new infrastructure.
The one technology breakthrough that would reduce our consumption would be to find a way to put our trains, trucks, and cars on the electric grid, at least on major routes. That would require changing to electric-drive hybrid vehicles, electrification on major routes, and some kind of trolley system for vehicles, along with a metering system to pay for usage.
Your vehicle could charge its batteries from the grid, or from its on-board generator when needed, when you were traveling away from the grid.