Hydrogen vs. Battery Electric Cars

Great topic and great comparison. However, I am missing some - in my opinion - crucial topics that have an effect on sustainability market and environmental aspects.
1. cost of production, monetary and environmentally.
2. Use of finite resources in the Production process.
3. Life cycle of the respective systems.
4. …and the possibility to refurbish the engines for reuse or how to salvage the components/materials for another life cycle

Just an idea for an extension or “part 2” on your current research! ;-))