The guy who's been trying to publicize this in the U.S. (in the video above) started a company last year, with the intent to make the first one here:
http://en.wikipedia.org/wiki/Flibe_Energy
The main issue with this is mostly publicity. Most people, like almost everyone who posted here in this thread, don't really know anything about it and inherently mistrust anything with "nuclear" attached to it. There's been nearly no media coverage of it at all - you'd have to
look very hard to find anything serious (and well informed).
None of the existing companies will ever pick it up since it completely undermines all the existing nuclear technology they've invested in (and most of their money comes from selling more fuel which, as you might expect, wouldn't be that useful if LFTRs were around), and it's hard to expect a government initiative when there's little public knowledge of (and thus public support for) it and obviously existing energy interests (especially oil/coal) would be completely against it.
Apparently, there's currently an indie movie/documentary in the works to try to get the word out a bit more:
http://www.thoriumdocumentary.com/ab...-good-reactor/
If you want to see more, there's been several Google Talks on it in the last few years, just look it up on youtube.