There will probably continue to be a future for liquid fuels (especially for aviation) for quite some time, but ICE vehicles are only cheap because we can get f

There will probably continue to be a future for liquid fuels (especially for aviation) for quite some time, but ICE vehicles are only cheap because we can get fuel out of the ground and don't have to pay the energy or climate impact costs up front. Battery-electric vehicles have such a huge efficiency advantage that I don't think ICE vehicles will ever be remotely competitive if you had to synthesize the fuel directly using renewable energy. A more efficient ICE engine (if it can live up to that claim) would be better than using old less-efficient engines, but I think we're at the point where the best option is not to use engines at all unless it's absolutely necessary for that application.