Hydrogen vs. Battery Electric Cars

Physically talking FCEV are a non sense. Overall efficency is less than 20% in energy consumption taking care of all transformations. BEV are much more efficent reaching a 40%. It's a non sense to produce grey or blue H2 which produce tons of CO2 that need to be handled and uses tons of energy. And it's a much more non sense usign renewable energy to produce green H2: it's more efficient to store energy usign pump storage (70% efficency overall), electrochemical storage (batteries 80% efficency overall), mechanical storage (up to 70% efficency overall) than do: electrolisys (up to 60% efficency), compression (another 20% loss), and then energy generation with FC (60% efficency) for a total 28.8% efficency. And talking about FCEV H2 need to be transported, compressed up to 700 PSI, used in car which has to store energy in battery (ups) convert to drive motor  for a total efficency of around 20%.