As of right now there are two bids for Florida HSR, the Fluor Bombardier consortium and a Korean group. Fluor proposes building a single main with sections of double track, adding double track as the system grows, and Bombardier's Jet Train Technology. The Korean group proposes an electric line, but I don't know much more than that. The selection by the HSR comittee is expected on the 27th of this month.