Yeah but....
E-CEM passed its first USNRL milestone in 2009 (naval researchers modified a std ClO2 cell with electro-deionization cell and released CO2 from seawater, and generated hydrogen as a byproduct).
Fast forward to 2015/16.
Still in lab/research scale. Producing synthetic fuel (mostly jet fuel) for navy aircraft (off of aircraft carriers powered by nuclear).
Just recently produced a synthetic fuel to power a small ICE (as in Internal Combustion Engine). That was for MODEL AIRCRAFT engine (so real small) with no modification needed to the ICE.
The talk is of course an S-EV (as in Saltwater - Electric Vehicle) - where the Hydrogen powering the fuel cell in the EV is derived from seawater instead of natural gas.
Big sticking point presently - energy efficiency in that it takes approx 2 units of energy input to produce the 1 unit of energy output for starters.