This time last century, well maybe a little before, they didn't think fossil fuels would replace oats as a source of power for vehicles.
92 1/2 years is a Long Time.
By then we might be getting the aluminum from the moon and using solar energy to refine it, or the Jihadies may have nuked us all by then. (Presumably we'll have nuked 'em back, unless there's a Rat President at the time, in which case we'd ask why they hate us so much).
You misunderstand me. It's not that I lack the vision for new transportation technology; rather, I think that by the time we got all the issues resolved satisfactorily to make this particular technology viable, we will have already solved the problem of cheap portable energy with other methods, rendering this approach moot.