These issues are discussed in the report - see pages 28/29 for example. Another approach discussed in the context of transport fuels is to use ammonia as an ef

These issues are discussed in the report - see pages 28/29 for example. Another approach discussed in the context of transport fuels is to use ammonia as an effective storage medium for hydrogen - cracking ammonia back to hydrogen before feeding it to a PEM fuel cell. That also has some challenges, notably in minimizing ammonia in the hydrogen, which isn't good for fuel cells. In the end, I do think we'll end up with liquid synthetic fuels being essential for decarbonization - the question is not if, but which?