Seems like the extra cost of transporting 350 pounds of aluminum pellets (plus some amount of gallium) from the nuclear reactor would be significantly higher than current transportation costs for an equivalent amount of gasoline (say 20 gallons at about 120 pounds). Plus the used Al has to be transported back. Six times the transport costs of gasoline...
Plus, we would be transporting a whole lot of water. Interestingly, the process requires approx. equal masses of Al and water. So the 350 pounds of Al requires transporting an additional 350 pounds of water (42 gallons).
Finally, if the water is emitted as steam won’t the global warming freaks be offended? Isn’t water vapor a potent greenhouse gas? Or maybe we can extract the heat energy and emit the water as liquid. Crowded highways will be permanently wet as each car on the road dumps a gallon of water on each 8 miles of highway (this may not sound like much, but consider a heavy traffic day with 75 cars per minute - this would be the equivalent of 1/3 inch of rain per day on the highways).
That said, if the process could be made more efficient (smaller Al-Ga granules to increase surface area) and possible recycling of exhausted water to reuse in the process) there may be a point where it becomes at least somewhat useful...
Finally, if the water is emitted as steam won’t the global warming freaks be offended? Isn’t water vapor a potent greenhouse gas?
That’s always been my first question regarding the use of hydrogen in vehicles. The increased production of the greatest greenhouse gas there is never seems to be addressed in any of the hydrogen schemes. If there is concern about a minor greenhouse gas like CO2 then you would think the greens would be falling all over themselves to prevent the use of hydrogen.