Hydrogen vs. Battery Electric Cars

Regarding charging times and demand on electricity grids... The way this is being dealt with for large ferries (e.g. the one that takes people and vehicles between Sweden and Denmark) is to have an onshore battery bank that can dump charge very quickly into the ferry's battery. The onshore battery can be recharged more gradually while the ferry is doing its next run. This greatly smoothes out the load on the grid, and greatly reduces recharging time of the ferry.