It’s not really an ICBM, it’s likely a hypersonic glide vehicle. I imagine people building this stuff have thought of obvious things like cost of fuel and parts before trying to build it. Maybe it will work or maybe it won’t, I think we’ll learn something interesting one way or another.

I also don’t think it’ll just be for elites. All successful technology becomes cheaper over time, and it sounds like they’re explicitly building a large capacity vehicle here. I imagine it’s going to be a long haul vehicle that could go anywhere in the world in about an hour.