Not even the most dot-com of Dot Com lifestylers might have a spare $73million lying around.
But they might well be elevating their social circles to include someone who does.
So when 2018 rolls around, it might be possible to hitch a ride on one of these:
Sounds like Spike has a lot to do between now and 2018, but the joy of technology is someone being up to the challenge.
Do note that the travel time compression mentions points separated by large bodies of water. The USA is among a number of nations that prohibit commercial air transport that exceeds the speed of sound.
Still, anything that can slice air time between continents is a welcome boost to anyone committed to reclaiming the fourth dimension.