Probably not as much as you'd think, though. Cars powered by compressed natural gas take longer to fill than gasoline-powered ones[1]. I can't find it right n

Probably not as much as you'd think, though. Cars powered by compressed natural gas take longer to fill than gasoline-powered ones[1]. I can't find it right now, but Edmunds did a long-term test of a natural gas Honda Civic. One of the persistent complaints was long fill times at public high-pressure stations. Natural gas has about 4x the energy density of Hydrogen, so the problem becomes even worse.