Hydrogen trains are more expensive than diesel or electrified equivalents (although the infrastructure costs of electrification over the 150km from Calgary to Banff are also very high).
Their use in Germany and other parts of Europe is likely to be commercially limited by the very high costs of producing the green hydrogen necessary to fuel them.
Alberta is uniquely positioned to produce very low cost hydrogen and the use of hydrogen trains by CABR would be a high profile catalyst for the transition of Alberta to a hydrogen economy, with North American and global export potential.