Hydrogen may have a role to play in aviation, but it has clearly failed for passenger cars and likely trucks as well. The Shell station next to my old office in

Hydrogen may have a role to play in aviation, but it has clearly failed for passenger cars and likely trucks as well. The Shell station next to my old office in San Francisco closed for maybe 9 months to be retrofitted for hydrogen. Those lost revenues will probably outweigh the entire revenue from hydrogen over the remaining life of the station. Essentially the only hydrogen cars in California are a small fleet owned by the state itself, and unlikely to be replaced when they reach end of life.