The advantage of ammonia is in the transportation and refueling. If you can refuel a car in the same amount of time that it would take to refuel it with gasolin

The advantage of ammonia is in the transportation and refueling. If you can refuel a car in the same amount of time that it would take to refuel it with gasoline, then it is a huge plus as it would allow a single fuel station to fuel many more vehicles in the same amount of time.. for instance, in the time it would take to fuel a EV to even 20% charge, you could conceivably fuel dozens of vehicles with ammonia. That apart, for fast charging or even standard charging you need a reasonably heavily power load from the grid - if you have even 4-5 vehicles charging simultaneously. This would require big changes in the electricity distribution infrastructure.. something which is not required if you continue to use the existing infrastructure used to take fuel to the fuel stations. Consider that you could easily fully refuel an 18-wheeler in a few minutes time with just a low powered pump.. which is not really possible if the 18-wheeler was a pure EV.