I’ve worked on Compressed Natural Gas vehicles. 3,600psi CNG is interesting enough to handle, and bulky. Compressed Hydrogen at 10,000psi w/ a 1” thick walled

I’ve worked on Compressed Natural Gas vehicles. 3,600psi CNG is interesting enough to handle, and bulky. Compressed Hydrogen at 10,000psi w/ a 1” thick walled wound carbon fiber tank to get even less mileage? With all the metal components going brittle over time? Good luck with that.