[llamaorama]

I think the real problem is the infrastructure. Are you really going to dig a 300 mile long tunnel or god forbid, build any kind of elevated structure whatsoever, in this country?

I once had this idea of the "vac-train" thing using much smaller vehicles that run in something that is more like a pipeline that the chunnel. It would just go in a trench. Even then, if it is going really fast it must be precisely engineered and I imagine they would still have to tunnel through hills and the like.