4 ms·

Exactly this. A modern sedan might get 40 miles to the gallon, but only has a tank of maybe 13 gallons (for a range of 500 miles / 800km). Meanwhile the bus g

• plorg 4y ago
  Hydrogen, also, has a much lower volumetric energy density that gasoline, diesel, or even LNG, and requires a bunch more equipment to maintain the cryogenic temperatutes required to keep it in a liquid state.
  • szundi 4y ago
    Funny to imagine how it burns in the fuel cell to maintain the cryogenic environment - thus it just depletes itself sitting in the same place.
    • fomine3 4y ago
      Evaporating on running vehicle isn't problem since the vehicle needs vaporized hydrogen. Long term storing could be a problem but it's bus.
• bombcar 4y ago
  Once tank size gets to a certain point (the "range" of the driver/passengers for example) the only reason to get bigger is to reduce refueling time or because of fuel availability limitations. This is part of the reason super long flights aren't as common as might be expected, because it's often significantly cheaper to have a layover, even if the plane could actually do the flight in one go - having to carry the second half fuel for the first half is heavy (and the extreme version of this is the rocket equation).
  • ephbit 4y ago
    For hydrogen tanks in cars the weight is not really an issue. Volume is much more so. Comparison to an airplane - where weight is basically everything - is pretty useless here.