Last week, Virgin Trains USA sold $1.75 billion worth of high-yield bonds to qualified investors eager to invest in “a whole new level of train transportation.” Initially proposed as a $1.5 billion sale, it was not only upsized to a $1.75 billion sale, but was also priced a day ahead of schedule because of such high demand.

And although the number of total orders received was not disclosed, one source heard that the deal received as much as $4 billion in total order requests, which is what likely caused the upsizing and early pricing. Zachary Solomon, Executive Director for Morgan Stanley, said he views the project, and its financing, as “a real landmark transaction in private investment in infrastructure.”

Proceeds from this sale will go towards extending service from West Palm Beach to the Orlando Airport with a stop in Cocoa, which is key to increasing ridership and achieving revenue projections. End to end trip time from Miami to Orlando is expected to be around 3 hrs.

Just days later, Virgin was granted approval for the sale of an additional $950 million in private activity bonds to supplement the Orlando project funding. It’s an additional vote of confidence by the investment community in the Florida project, and the Virgin Trains USA brand as a whole.

Right before the initial bond sale, Virgin Group founder Sir Richard Branson participated in an event to kick off the official rebranding from the Brightline name. The rebranding is expected to bring more name recognition and public confidence that comes with an established company.

This is an important step forward in recognizing the legitimacy of passenger rail as not only a viable transportation option for the public good, but as a profitable private enterprise. It’s an encouraging signal for other passenger rail projects on the horizon that investors are willing to take them seriously.