A conventional further objection to using hydrogen as a fuel for vehicles is its low (relative to gasoline) energy content per gallon.
According to Richard Muller's "Physics for Future Presidents," even in liquid form hydrogen has about 1/3 the energy per volume.
Muller also notes that storing liquid hydrogen requires a much stronger, heavier tank than for gasoline. Maybe these "micro-beads" can contain liquid hydrogen, given the researchers' claim they can use their fuel in an unmodified car. In that case, look for 1/3 the range. If instead their microbeads contain compressed hydrogen gas, Muller estimates a car could go in the neighborhood of 10-50 miles between fill-ups.
According to Richard Muller's "Physics for Future Presidents," even in liquid form hydrogen has about 1/3 the energy per volume.
Muller also notes that storing liquid hydrogen requires a much stronger, heavier tank than for gasoline. Maybe these "micro-beads" can contain liquid hydrogen, given the researchers' claim they can use their fuel in an unmodified car. In that case, look for 1/3 the range. If instead their microbeads contain compressed hydrogen gas, Muller estimates a car could go in the neighborhood of 10-50 miles between fill-ups.